Estadística
Análisis de datos, distribuciones de probabilidad y pruebas de hipótesis.
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which statement is true about a trend line? a regression line and a tre…
A regression line and trend line are equivalent terms.
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who is correct and why? shelby is correct because the line of best fit …
Shelby is correct because the line of best fit has a negative slope and the trend shows a decrease in \(y\) values as the \(x\) values increase.
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in 1992, the national park service issued a report saying that visitors…
\( 69388.89 \) million hours.
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which is the equation of the line of best - fit for this scatterplot? $…
\(y =-\frac{2}{81}x+\frac{111748}{81}\)
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question 10 facts, statistics, testimonies, and narratives are all exam…
supporting material.
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dependent variable c depends on both independent variable a and indepen…
The relationship between independent variable A and dependent variable C, and the relationship between independent variable B and dependent variable C can both be analyzed, but th…
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which statement about the outlier in the data set is true? blake should…
Blake should not include the outlier because it overstates the effect of rainfall on temperature.
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in interpreting a boxplot of a data set we note that the median is to t…
B. The data is skewed right.
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which data value would cause the interpretation of the data set to be o…
\((1,60)\)
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sas was used to compare the high school dropout rates for the 30 school…
A. Dropout rates had a higher average with more variability in 2010 than in 2012
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which statement about the scatterplot is true? the scatterplot does not…
The scatterplot does not have a cluster, and the variables are related. As \(x\) increases, \(y\) increases.
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a random sample of sale prices of homes yielded the following summary i…
C. This value falls outside the upper fence and is considered an outlier.
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based on the information above, how many miles should a person who driv…
42 miles
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for which number of apples is the prediction of the total weight an ext…
18
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a teacher gathered data about the number of hours her students spent st…
- The data set would have a linear association. - The data set would have a positive correlation. - Every student earns 16 more points for each additional hour they study. - Stude…
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which describes a correct way to construct a scatterplot? when analyzin…
When analyzing the number of home runs that a baseball player hit over several seasons, the season is the independent variable.
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what is the name of the method for drawing a trend line for the data in…
the divide - center method
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how can amani use the trend line to check the reasonableness of her ans…
She should expect the slope to be negative because the line tilts down moving from left to right on the graph.
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multiple choice question what is meant by the term federal bureaucracy?…
the agencies and employees of the executive branch
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5. the circle graph gives the distribution of amandas monthly expenses.…
She spent $\$500$ on food and the total of food and shopping is $\$900$.
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what is the purpose of a regression line? o to connect all the points i…
to show the general tendency of the points in a scatterplot
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5. the circle graph gives the distribution of amandas monthly expenses.…
Food = \(500\) Shopping = \(400\)
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which statement about the table is true? there is a cluster, and as x d…
There is a cluster, and as \(x\) increases, \(y\) increases.
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linear, strong linear, weak nonlinear, strong nonlinear, weak
nonlinear, weak
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which statement is true about the purpose of trend lines in scatterplot…
A trend line can be used to make predictions in real - world situations.
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based on the data collected, if the store has been open 7 hours, which …
After 7 hours, 175 customers had been in the store.
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between 1 and 10 between 0 and 55 between 5 and 55 between 25 and 50
between 25 and 50
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according to the graph, which combination of minutes played and levels …
20 minutes played and 9 levels passed
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occurs? x>6 x<0 and x>6 x<0 and x>10 x≥0 and x≤6
\(x\geq0\) and \(x\leq6\)
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based on the data collected, which combination of gallons in the gas ta…
11 gallons in the gas tank and 360 miles.
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check your understanding let ( x = ) the number billionaires in a rando…
1. **Step - by - Step Format for Question 1**: - **Explanation**: - **Step1: Determine the relationship between \(X\) and \(Y\)** - We know that \(Y = 7000X\) (since each of the \…
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explaining a process explain how to use the regression calculator to ma…
First, input the data from the table into the regression calculator. Then, select the appropriate regression type (like linear, quadratic, etc.) based on the data pattern. After g…
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ramona used the regression equation ( y = 0.444x - 21.29 ), where ( x )…
She substituted the 8.5 for the wrong variable.
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using the regression line to make a prediction enter values for x and y…
\(64\)
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enter values for x and y in the table to plot points in the graph. the …
\(63\)
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evaluating a prediction kardal used the trend line to predict that a ma…
No data is given in the scatterplot for a height of 72 inches, but a shoe size can still be predicted.
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the following data represent the weight (in grams) of a random sample o…
The distribution is approximately symmetric.
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comparing and contrasting predictions compare and contrast interpolatio…
Interpolation predicts within data range (more reliable), extrapolation predicts outside (less reliable).
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chester used the regression equation of the weight loss plan to make a …
$1.94$
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directions match the words in column 1 with their meanings in column 2.…
1. b 2. g 3. f 4. c 5. j 6. a 7. d 8. h 9. i 10. e 11. l 12. k
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enter values for x and y in the table to plot points in the graph. ente…
\(3.6\)
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the following data represent the weight (in grams) of a random sample o…
The five - number summary is \(0.598, 0.599, 0.600, 0.604, 0.611\)
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making a prediction using the regression calculator enter values for x …
A person who is active for 8 hours weekly could expect to lose \(9\) pounds a month. To lose 5 pounds a month, a person should plan to be active for \(4.8\) hours a week.
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does the correlation in the situation illustrate causation? the longer …
A. No, having a longer thumb likely does not cause someone to read more books.
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making a prediction using the regression calculator enter values for x …
A person who is active for 8 hours weekly could expect to lose \(10.1\) pounds a month. To lose 5 pounds a month, a person should plan to be active for \(3.6\) hours a week.
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determine whether the following events are mutually exclusive. explain …
These events are not mutually - exclusive, since it is possible to select a female biology major who is 21 years old.
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golf the table shows the average golf scores and total miles walked for…
A. correlation but no causation
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movie theater a movie theater is tracking the number of movie tickets a…
B. positive correlation and causation
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attendance the attendance, in hundreds of people, at an aquarium and a …
A. correlation but no causation
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exercise an average number of miles walked and biked each week for six …
D. neither correlation nor causation
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use the trend line for the data in the scatterplot to make a prediction…
6 pounds
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practice making predictions. use the trend line for the data in the sca…
Looking at the trend line, when \(x = 4\) (4 hours of weekly aerobic activity), the corresponding \(y\) - value (monthly weight loss) is approximately \(4.5\) pounds. So the answe…
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concessions a concession stand is tracking the average high temperature…
C. negative correlation and causation
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salads a restaurant is tracking how many salads it sells each week. is …
A. correlation but no causation
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decide whether the events shown in the accompanying venn diagram are mu…
The events are mutually exclusive, since there are no movies that are rated PG - 13 and R.
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16. painting you used $90 worth of paint for a school float. (section 2…
- For part a: Graph with x - axis labeled "Gallons of Blue Paint", y - axis labeled "Gallons of White Paint", line passing through \((5,0)\) and \((0,6)\) labeled \(18x + 15y = 90…
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justifying predictions of a scatterplot can predictions be made of a sc…
No, predictions cannot be made. Since there is no association (no relationship between the variables shown in the scatterplot), there is no basis (no pattern) to predict values of…
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enter values for x and y in the table to plot points in the graph. use …
Can not be determined because it is an extrapolation.
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the dot plot below represents how long it takes students in a 7th grade…
\(22.74\)
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use the regression for clothes - 4 - you coat sales to make predictions…
\(26.2\)
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use the regression for clothes - 4 - you coat sales to make predictions…
When the average temperature is \(80^{\circ}F\), the number of coats sold is \(26\). When \(125\) coats are sold, the predicted temperature is \(-22.9^{\circ}F\)
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based on the two data sets represented below, complete the following se…
The center of Data Set B is less than the center of Data Set C. The spread of Data Set B is less than the spread of Data Set C.
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evaluating extrapolated predictions what can be concluded about the ext…
- Eventually the coat sales will be negative, which is not possible. - Some predictions may not be accurate.
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based on the two data sets represented below, complete the following se…
The center of Data Set N is greater than the center of Data Set O. The spread of Data Set N is less than the spread of Data Set O.
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calculating predictions using the regression equation what is the predi…
\(84\)
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based on the two data sets represented below, complete the following se…
The center of Data Set N is less than the center of Data Set O. The spread of Data Set N is less than the spread of Data Set O.
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quincy claims that if 80 coats are sold, the outside temperature is lik…
No. Quincy should have used the trend line to find the corresponding \(x\) value when \(y = 80\).
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answer the center of data set i is than the center of data set ii. the …
The center of Data Set I is less than the center of Data Set II. The spread of Data Set I is less than the spread of Data Set II.
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(a) identify the shape of the distribution, and (b) determine the five …
a. C. The distribution is skewed right. b. The five - number summary is \(1\), \(3\), \(4\), \(7\), \(17\).
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based on the two data sets represented below, complete the following se…
The center of Data Set V is less than the center of Data Set W. The spread of Data Set V is less than the spread of Data Set W.
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a researcher studied the relationship between the number of times a cer…
The predicted temperature in degrees Fahrenheit if the cricket has chirped 120 times.
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distinguishing interpolated data which temperature values would an inte…
between \(0\) and \(60\)
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julians math teacher plots student grades on their weekly quizzes again…
A student who actually spent \(0.5\) hours studying and got a score of \(53.1\).
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explore making predictions from a scatter plot enter values for x and y…
70 coats
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ashley has a part - time job at an ice skating rink selling hot cocoa. …
A prediction of the number of hot cocoas sold when the temperature is \(0^{\circ}F\).
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lincoln decides to research the relationship between the length in inch…
The expected length of a catfish that weighs 29 pounds.
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tariqs math teacher plots student grades on their weekly quizzes agains…
The change in expected quiz score for every additional one hour students spend on their homework.
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the scatter plot and line of best fit below show the length of 7 people…
The change in expected height for every one additional centimeter of femur length.
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zanlaya has a part - time job at an ice skating rink selling hot cocoa.…
The rate of change in the expected number of hot cocoas over the day's high temperature.
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which of the following regressions represents the strongest linear rela…
Regression 4
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42. seventeen - year - old david has an 11 p.m. curfew, but his girlfri…
C. relationship
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question 16 indicate the answer choice that best completes the statemen…
C. \(475\) pounds (assuming there was a data - entry error in the problem's table, and if we consider for example Lion \(500\) and Tiger \(450\), \(\frac{500 + 450}{2}=475\))
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31. jin is designing a slideshow presentation to illustrate conflict th…
Power to the People!
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read the following questions and select the correct answers. which of t…
- First Question: Kansas' tallest point is Mount Sunflower at 4,039 feet; The population of Kansas was 2,853,118 in 2010. - Second Question:.org - Third Question: Including an in …
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the accompanying data represent the wait time (in minutes) for a random…
\(24\)
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corroboration means finding 2 or more sources that say the same thing a…
True
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question 2 which best describes the term \provenance,\ and why it is im…
B. using the history of an art object to establish its authenticity
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when you make a pun, youre exploiting or playing with the multiple mean…
B. I read a book about gravity: it was pretty heavy.
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at the movie theater, janna and amy wait in different lines to buy one …
$0.04$
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in a game you are required to pull a letter from a bag that contains on…
0.100
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you reach into a bin of dvds on sale at the drugstore and randomly pull…
Dependent, because the outcome of the first event affects the outcome of the second event.
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a box of matching game pieces contains 8 red pieces, 5 green pieces, an…
\(\frac{1}{10}\) (corresponding to the second option)
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which of the following scenarios best answers the following question: i…
The patient would be able to understand the word “mother,” but would not be able to say it.
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a researcher studied the relationship between the number of times a cer…
The predicted temperature in degrees Fahrenheit if the cricket has chirped 110 times.
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a radio station has movie tickets to give away: 4 for a new action movi…
0.152
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fawzias math teacher plots student grades on their weekly quizzes again…
A prediction of a student's quiz score if they spent 1 hour on their homework.
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consider this claim: daylight saving time should be abolished. which is…
A study from the National Bureau of Economic Research found that turning the clocks forward in the spring increased energy consumption, contradicting the popular belief that dayli…
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question fawzias math teacher plots student grades on their weekly quiz…
The predicted quiz score for a student who studies 1 hour per week.
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while playing a board game, you roll two different colored standard dic…
\(\frac{1}{12}\) (First option)
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zoeys math teacher plots student grades on their weekly quizzes against…
A student's expected quiz score if they spent no time on their homework.