Estadística
Análisis de datos, distribuciones de probabilidad y pruebas de hipótesis.
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a survey of 400 non - fatal accidents showed that 117 involved the use …
B. \(0.293\)
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6. which type of error occurs when the null hypothesis is incorrectly r…
A. Type I Error
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5. what does the null hypothesis (h₀) typically assert in hypothesis te…
A. There is no effect or difference.
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4. the mode of a data set is: a. found by dividing the sum of all value…
d. The value that appears most frequently
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select the word in the sentence that means \to gather (a crop).\ seeing…
harvest
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which statements describe the shahs rule of iran in the 1950s and 1960s…
He invested in industrialization and modernization, He suppressed free speech and other civil liberties, He signed lucrative oil deals with Western countries, He established a lan…
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read the excerpt from \the role of social media in the arab uprising\ b…
data showing the widespread use of social media in countries involved in the uprisings, statistics that describe Egyptians’ use of the internet and social media during the uprisin…
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select the word in the sentence that means \having the ability, fitness…
capable
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1. what does it mean if the results of a study are statistically signif…
d. The observed effect is unlikely to have occurred by chance, according to the significance level.
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gandhis nickname, mahatma, means a. enlightened one b. great soul c. ha…
B. great soul
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select the word in the sentence that means \a body of water or air movi…
current
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select the word in the sentence that means \absolutely necessary, extre…
essential
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select the word in the sentence that means \capable of being perceived …
concrete
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select the word in the sentence that means \different ways we use to sh…
media
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scarcity means people must make choices. choices have consequences, or …
- David will probably have to pay to have the bike fixed up every year or so: Future - David also wanted to buy new shoes, but he doesn't have enough money to buy them anymore: Pr…
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if you want to find the most frequently occurring value in your data se…
d. Mode
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what statistical method is used to find the middle value in a data set?…
A. Median
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what does analyzing data involve? a. presenting data without analysis b…
C. Using statistical methods to understand the data
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19. the circle graph gives the distribution of the colors of markers in…
D. 600 ### Question 20
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a survey of 600 non - fatal accidents showed that 196 involved the use …
A. 0.327
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skills are the ability to communicate research findings effectively to …
1. Communication 2. range 3. methodology
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construct a 95% confidence interval for the population mean, μ. assume …
D. \((77.29,85.71)\)
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the process of selecting a subset of individuals from a population to e…
Communication; range; methodology
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in the following questions, you will learn about economics. economics i…
- Satisfy a need: Gabby eats breakfast so she has energy for the day; Gabby goes to work so she can make money to pay for her house. - Satisfy a want: Gabby cancels plans for next…
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the grade point average collected from a random sample of 150 students …
A. $(2.71,3.01)$
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a visual representation of data, including bar graphs, line charts, and…
graphic, thinking, validity, mode, sampling
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a structured inquiry to discover information about a specific topic is …
1. research 2. formulate 3. Qualitative 4. mean 5. reliability
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instructions for student: reread paragraphs 8 and 9 of the essay. then …
1. C. The metaphor of her soul as a safe nest emphasizes that Sepiso is creating her own origin. 2. B. By personifying words, Sepiso emphasizes her struggle to accurately explain …
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meaning options (4 of 4) expressions used for descriptive or rhetorical…
- context: the events, situations, or language that surround a particular word, phrase or piece of text that help explain its meaning - figurative language: expressions used for d…
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in a set of data, the range is calculated by: a. subtracting the smalle…
A. Subtracting the smallest value from the largest value
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what does the median represent in a data set? a. the difference between…
B. The middle value when the data set is ordered
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the mode of a data set is; a. the difference between the highest and lo…
C. The value that appears most frequently
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hat is the graph of the equation ( y = -\frac{1}{4}x + 2 )? the y - int…
The y - intercept is \(2\), which means the line crosses the y - axis at the point \((0,2)\). The slope of the line is negative, so it goes down from left to right. Start at the y…
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which statistical tool is used for analyzing and visualizing data? a. s…
A. Statistical software
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if a data set has more than one mode, it is called: a. bimodal b. unimo…
C. Multimodal
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critical evaluation of datas reliability and validity is important for:…
C. Ensuring the integrity of conclusions
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which of the following is a measure of dispersion? a. mode b. range c. …
B. Range
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the median of the data set 5, 8, 3, 12, 7 is: a. 7 b. 5 c. 9 d. 8
A. 7
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which of the following is a measure of central tendency? a. range b. me…
B. Mean
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playing their best is more important to them than winning. 10. biless o…
B. While the first text argues that mental health awareness in sports leads to meaningful change, the second text claims that awareness alone isn't effective.
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meaning options (6 of 6) information and evidence used to prove or corr…
analyze - to examine the parts of something in detail central idea - the most important point that an author makes about a topic in a text explicit - precisely and clearly express…
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for men of 80 years of age and older, a weight of 233.5 pounds falls on…
\(5\%\)
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in a data set arranged in ascending order, the is the middle value. the…
median, scientific, reliability, validity, graph
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in july of 2015, the elderly population (ages 65 and above) made up 13.…
Total change \(=+7.00\) pp Percent change \(=+50.87\%\)
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a statement that can be tested with statistical methods is known as a t…
1. hypothesis 2. mode 3. range 4. inference 5. mean
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question 33 of 35 which of the following is an important element in cap…
D. Minimal government regulation, ensuring free choice
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what does it mean if the results of a study are statistically significa…
C. The observed effect is unlikely to have occurred by chance, according to the significance level.
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which semiotic concept requires a viewer to learn a connection between …
Symbol
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what is the commonly used significance level (a) threshold in hypothesi…
B. 0.05
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which of the following best describes a p - value? a. the probability o…
a. The probability of observing the data, or something more extreme, if the null hypothesis were true.
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42. freight train cars in a train yard there are 4 tank cars, 12 boxcar…
\(166320\)
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what does the null hypothesis (h₀) typically assert in hypothesis testi…
B. There is no effect or difference.
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if a studys p - value is 0.03, and the significance level is set at 0.0…
B. Reject the null hypothesis.
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in hypothesis testing, if the significance level is set to 0.01, this i…
d. A 1% risk of committing a Type I error, rejecting the null hypothesis when it is true.
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read the corporate document. all employees of cozy clothes ltd. are ent…
to indicate steps in a process
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what is the primary reason for setting a significance level before cond…
c. To decide the threshold for rejecting the null hypothesis.
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which type of error occurs when the null hypothesis is incorrectly reje…
C. Type I Error
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what does a type ii error signify in hypothesis testing? a. correctly r…
d. Failing to reject a false null hypothesis.
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statistical tests that compare two or more groups are known as tests. t…
1. Inferential 2. Parametric 3. Parametric
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failing to reject a false null hypothesis is known as a error. the proc…
1. Type II 2. Hypothesis 3. sample 4. significance 5. standard
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in statistics, the hypothesis suggests that there is no effect or no di…
1. null 2. alternative 3. p - value 4. significance 5. Type I
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the basketball teams scoring range over the last season was between 90 …
A. A break between the origin and 80, then continue to 120, with increments of 5
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30. toothpaste display how many different ways can 5 identical tubes of…
\(27720\)
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which statement is true? a. the towns population has increased from an …
A. The town's population has increased from an initial population of 15,000 in 1985.
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arson is a: a misdemeanor. b part two index crime. c part one index cri…
C. Part One Index crime.
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question 1 (5 points) match the prefix with the correct description. th…
1. The prefix semi - means partial or half. 2. The prefix brevi - means short. 3. The prefix stylo - means stalk or stylus. 4. The prefix brachi - means arm. 5. The prefix gloss -…
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the annual profits for a company are given in the following table, wher…
288 thousand dollars
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15. which graph type is best for showing how data changes over time? a.…
A. Line Graph
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14. which statistical test is appropriate for comparing the means of tw…
B. Independent samples t - test
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13. which of the following best describes statistical significance in h…
B. The result is unlikely to have occurred by chance, according to a pre - defined significance level
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12. which graph type would be most appropriate to compare the popularit…
d. Bar Chart
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11. in the context of statistical analysis, what is a \sample\? a. a su…
A. A subset of the population used for analysis
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10. how is the median of a data set determined? a. by finding the most …
C. By identifying the middle value in an ordered set
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which sentence describes when a reader draws an inference from the text…
The reader uses details from the text to figure out an idea that is not stated.
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9. what does a low p - value (typically less than 0.05) indicate in hyp…
d. The observed data are unlikely under the null hypothesis
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7. why is it important to critically evaluate graphs presented in media…
d. To understand how data can be manipulated to mislead
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6. what is critical for choosing the correct graph type for your data? …
C. The nature of the data
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4. what is the probability of drawing a red card from a standard deck o…
A. \(1/2\)
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3. when would you use a pie chart? a. to track the progress of a projec…
B. To show parts of a whole
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2. when evaluating the validity of a graph, what should you check for? …
B. Misleading scales or omitted data
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1. what does the mean represent in a data set? a. the most frequently o…
d. The average value of all data points
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in hypothesis testing, what role does the alternative hypothesis play? …
A. It proposes a significant effect or difference that is tested against the null hypothesis
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which statistical test is appropriate for comparing the means of two in…
B. Independent samples t - test
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question 5: find the means of the follow numbers. (write answer as a de…
Question 5: \(1.5\) Question 6: \(9\)
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what does a low p - value (typically less than 0.05) indicate in hypoth…
d. The observed data are unlikely under the null hypothesis
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what does failing to reject the null hypothesis imply? a. there isnt su…
A. There isn't sufficient evidence to support the alternative hypothesis
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which error occurs when the null hypothesis is incorrectly rejected? a.…
D. Type I error
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which of the following best describes statistical significance in hypot…
C. The result is unlikely to have occurred by chance, according to a pre - defined significance level
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what is the null hypothesis in a study comparing two teaching methods? …
C. There is no difference in effectiveness between the two methods
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what is the significance level (alpha) commonly used in hypothesis test…
B. 0.05
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the probability distribution used in the t - test, especially when the …
1. t 2. variance (or standard deviation) 3. practical
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the value quantifies the probability of observing the collected data, o…
1. p - value 2. independent - samples t - test 3. standard error 4. significance 5. chi - square
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the default position that suggests there is no significant effect or di…
1. null 2. alternative 3. significance 4. Type I 5. Type II
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(a) what is the class width? (b) one class is the most frequent. how ma…
(a) \(74\) (b) \(9\) (c) \(19\)
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here are the scores of 12 students on a geography test. 56, 60, 62, 70,…
Minimum: \(56\) Lower quartile: \(66\) Median: \(81\) Upper quartile: \(89\) Maximum: \(92\) Interquartile range: \(23\)
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here are the scores of 12 students on a geography test. 56, 60, 62, 70,…
Minimum: \(56\) Lower quartile: \(66\) Median: \(79\) Upper quartile: \(89\) Maximum: \(92\) Interquartile range: \(23\)
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(a) how many bottling plants had from 11 to 17 work stoppages? (b) how …
(a) \(6\) (b) \(19\) (c) \(6\)
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(a) how many bottling plants had from 11 to 17 work stoppages? (b) how …
(a) 1 (b) 3 (c) 6
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the executives at hygreat, a soda and energy drink company, conducted a…
\(6\)
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which of the following best describes the mode of a data set? a. the va…
A. The value that appears most frequently in the data set