統計與機率
資料分析、機率分佈、假設檢定與統計方法。
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16. what does the height of a bar in a histogram represent? a. the medi…
b. The frequency of the data
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15. the number of hours worked by employees in a week are 10, 15, 20, 2…
d. Moderate variability
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14. what does a histogram with bars decreasing in height from left to r…
c. Right - skewed distribution
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13. what kind of distribution is most likely if a histogram displays a …
a. Skewed left
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12. two data sets are given: data set a: 2, 4, 6, 8, 10 data set b: 1, …
c. Data Set A and Data Set B have the same range.
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11. when interpreting a dot plot, what might a clustering of dots indic…
b. A concentration of values
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10. what would be the upper limit for a dataset with q3 = 50 and iqr = …
b. 80
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9. what measure of central tendency is most affected by an outlier in a…
c. Mean
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8. the median of which data set is 5? a. 4, 5, 6, 7 b. 2, 6, 8 c. 5, 4,…
d. [3, 4, 5, 6, 7]
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7. which of the following statements about the mean and median is true?…
a. The mean is influenced by extreme values more than the median.
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6. which graph is best for understanding the distribution of a single v…
b. Histogram
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5. in a box plot, what does the box represent? a. the range b. the inte…
b. The interquartile range
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4. what does the shape of a uniform distribution look like? a. flat b. …
a. Flat
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3. how can you identify the mode in a dot plot? a. the number in the mi…
c. The number with the most dots above it
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2. how are outliers typically represented in a box plot? a. data points…
d. Data points beyond the whiskers
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1. two data sets are given: data set a: 1, 10, 20, 30, 40 data set b: 2…
c. 15.50, 3.16
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23. what does the t represent in the exponential decay formula $n = n_0…
d. The time elapsed
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22. what kind of real-world application uses exponential decay models? …
c. Calculating the half - life of a chemical substance
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the inflation rate on home heating oil is 10%. if the price of home hea…
$2.48$
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which of the following statements describes chunking? it involves organ…
It involves organizing items into related bits of information.
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a number cube (a fair die) is rolled 3 times. for each roll, we are int…
| Value \( x \) of \( X \) | \( -2 \) | \( 0 \) | |--------------------------|---------|--------| | \( P(X = x) \) | \( \frac{1}{4} \) | \( \frac{3}{4} \) | Wait, let's recheck th…
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find the product. 16 × 0.1 = ?
\(1.6\)
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22. the cost c of producing n items varies directly as n and partly as …
The constants are \( k = 30 \) and \( m = 150 \), and the equation is \( c = 30n + \frac{150}{n} \). ### Part (b)
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billy and sam are collecting clothes for a clothing drive. sam collecte…
\(1\frac{1}{8}\)
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on friday, danielle sold 3 4/5 pitchers of lemonade from her lemonade s…
\( 2\frac{7}{25} \)
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his majesty’s address on the occasion of taking the oath presented by t…
B. analogy
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quiz instructions exam 1 will cover material from chapters 1,2, & 5. yo…
True
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select the correct answer. matthew is writing a research paper about th…
A. However
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test: nystce multi - subject: teachers of childhood (grade 1–grade 6) p…
C. 15
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c. $\frac{1}{2} = \frac{}{10}$
The missing number is 5, so $\frac{1}{2}=\frac{\boldsymbol{5}}{10}$
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fill in the missing fraction 1. \\(\\frac{3}{4} = \\frac{\\quad}{8}\\)
\(6\)
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practise your new skills 1. before a school dance, the organizing commi…
137 ### Part (b)
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Question was provided via image upload.
\(34\%\) ### Part (b)
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\she has today proffered her resignation, which we have accepted.\ in t…
D. tendered
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vicissitude means : ○ liberality in bestowing gifts ○ variability in li…
B. variability in life or nature
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chapter 2: graphical representations 111 build your skills 1. the circl…
Approximately 24 students chose green. ### Problem 1b
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effulgence means : complete and confirmed integrity the loyalty that ci…
C. the quality of being bright and sending out rays of light
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interpose means to: gain through experience insert between other elemen…
B. insert between other elements (assuming the second option is labeled B; if the original labels were different, adjust accordingly, but based on the options, the correct one is …
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the two women who loved him parted with specious expressions of confide…
C. deceptive
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use the chart below to answer the following: how much was spent on savi…
$4,500
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use the chart below to answer the following: true or false? there is $8…
False
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you earn $1,900 per pay period. your deductions are $430.20, $172.80, a…
$1124.31
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jean chose the ppo single plan. her employer will pay 45% of the cost o…
$1848
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the reed family makes $71,800 annually and has 2 children. the income t…
False
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you make $18 an hour and earn a 14% commission on your sales. true or f…
False
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if you make $6 an hour and earn a 9% commission on your sales, how much…
$360
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true or false: if you get paid $43,150 annually, you make $992.81 weekl…
False
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true or false: $456.1592 to the nearest cent is $456.16. true false
False
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what is $12,822.5412 rounded to the nearest dollar? $12,820 $12,823 $12…
D. $12,822
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true or false: in a 49 hour week, 9 hours are overtime hours. ○ true ○ …
O False
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true or false: if you work from 9:15 a.m. to 2:45 p.m., you worked 6 ho…
False
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true or false: if you work from 1:30 a.m. to 9:15 a.m., you worked 7 ho…
False
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if you make $875 a week and earn a 12% commission on your sales, how mu…
$1,535
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true or false: if you make 11% commission on $4,110 in sales, you made …
False
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true or false: if you get paid $0.87 for every shirt and make 374 shirt…
False
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variable statistics which graph shows data whose r - value is most like…
The third graph (the one with points showing a strong positive linear trend, increasing from left - bottom to right - top and lying close to a straight line)
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you work 44 hours at $17.57 an hour. what is your total pay if overtime…
B. $808.22
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true or false: if you earn $87,150 per year, your weekly rate is $1,675…
True
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true or false: if your net pay is $719.43 and your deductions are $315.…
False
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jo ann chose the ppo single plan. her employer will pay 50% of the cost…
$1,680
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the gomez family makes $98,700 annually and has 1 child. the income tax…
False
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you must answer this prompt in a paragraph. that means you need a topic…
If I could create a soundtrack for my life, I would include "Rise Up" by Andra Day and "Brave" by Sara Bareilles. "Rise Up" would be included because its empowering lyrics and sou…
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if you get paid $85,800 annually, how much do you get each weekly pay p…
$1,650
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true or false: if you make $2,300 a paycheck and get paid bi - weekly, …
False
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what is $12,822.5412 rounded to the nearest dollar? $12,820 $12,821 $12…
\$12,822
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what is $865.2651 rounded to the nearest dime? $865.26 $865.30 $865.27 …
$865.30
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true or false: $2,181.7254 rounded to the nearest dollar is $2,182. tru…
True
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true or false: brittany works for a retail store and sells socks. if sh…
False
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true or false: if you get paid $0.87 for every shirt and make 374 shirt…
False
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if you get paid $9.99 for every sock and make 390 socks, estimate how m…
Approximately $\$390$ (or more precisely around $\$386.10$)
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which of the following statements is true? the indian appropriations ac…
B. The Indian Appropriations Act of 1871 meant that tribes were no longer classified as independent nations.
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8 which sentences from paragraphs 18 through 21 best support the idea t…
C. "Schumer said he planned to work closely with the president and build upon administration’s actions." (Paragraph 19) E. "Meanwhile, government agencies were evaluating how to u…
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1. the distribution of employee salary at a large company is skewed to …
1. Adjusted salary distribution shape: Skewed right. Adjusted mean: $\$75600$ Adjusted standard deviation: $\$36554$ 2. Wayne's z-score: $1.8$ 3. 73rd percentile meaning: Pete sco…
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the median of 5, 7, 2, 9, 8 is: 5 7 8 6
7 (corresponding to the option "7")
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18. a) the masinde muliro university uses three buses a, b and c. on an…
\(0.075\) ### ii) Only one bus is operating
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you see a \pending\ label beside a transaction you made yesterday. what…
C. The transaction is recognized but not yet fully processed by the bank
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you deposit $4000 each year into an account earning 3% interest compoun…
\( \$240905.72 \) (rounded to the nearest cent)
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the speaker in these lines from langton hughes’s poem “i, too” states t…
C. Even though he is being rejected by those at the table, the speaker is confident and resilient to adversity.
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select the correct answer. what does the word incensed mean in the foll…
C. enraged
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read this passage taken from \how the spaniards came to shung-opovi, ho…
- cultural differences between the Hopi peoples and the Spaniards - hardships of the Hopi peoples
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why are inferences important when we read? ote: use your own words to a…
Inferences help readers understand implicit meanings, connect ideas, and gain deeper insights from the text.
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interpreting residual plots shown below are three scatter plots and the…
To solve this, we analyze each scatter plot and residual plot: ### Residual Plot 1 - **Pattern**: Residuals show a curved (non - linear) pattern (e.g., starts low, rises, then fal…
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interpreting residual plots shown below are three scatter plots and the…
To solve this, we analyze the relationship between scatter plots and their residual plots: ### Residual Plot 1 - **Pattern**: Residuals (vertical distances from points to the line…
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shown below are three scatter plots and their lines of best fit. also s…
Scatter Plot B ### Residual Plot 2:
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four distributions, labeled (a), (b), (c), and (d) are represented belo…
$\mu_{b}<\mu_{d}<\mu_{a}<\mu_{c}$
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shown below are three scatter plots and their lines of best fit. also s…
To solve this, we analyze each residual plot and match it to the scatter plot, then describe the line of best fit: ### Residual Plot 1 - **Match Scatter Plot**: Residual Plot 1 ha…
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shown below are three scatter plots and their lines of best fit. also s…
To solve this, we analyze each scatter plot and residual plot: ### Residual Plot 1 - **Scatter Plot Match**: Scatter Plot A (points lie perfectly on a straight line, so residuals …
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shown below are three scatter plots and their lines of best fit. also s…
To solve this, we analyze the scatter plots and their corresponding residual plots: ### Residual Plot 1 - **Match Scatter Plot**: Residual Plot 1 has residuals with no clear patte…
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shown below are three scatter plots and their lines of best fit. also s…
Scatter Plot A, Negative trend Scatter Plot B, Horizontal line Scatter Plot C, Perfect fit
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talk2u and proze are two social media apps in which users can post mess…
s: (a) - z - score of Manuel's post: $\boldsymbol{3.19}$ - z - score of Alan's post: $\boldsymbol{2.38}$ (b)
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an ordinary (fair) coin is tossed 3 times. outcomes are thus triples of…
Value \( x \) of \( X \): \(-6\), \(-2\) \( P(X = x) \): \(\frac{3}{4}\), \(\frac{1}{4}\)
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two athletes are training for a cycling race. each athlete recorded the…
Athlete A ### (b)
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15. a population starts at 2000 and increases at a rate of 4% per year.…
d. 2433
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11. what is the initial amount of a substance if it decays to 250 grams…
a. 376 grams
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7. if a quantity triples every 3 years, which of the following best rep…
a. \( f(t) = 100 \times 3^{\frac{t}{3}} \)
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saving money everyday on her way home from school, jen uses $1 to buy a…
8 weeks ### Part b
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20 mark for review the table summarizes the distribution of age and ass…
B. \(\frac{1}{4}\)
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the camp cook made 6 3/10 pots of chicken soup. each serving of soup is…
9
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workmen used 3/5 of a pallet of pavers to build some steps leading up t…
6
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a factory uses 7/10 of a barrel of raisins in each batch of granola bar…
\( 2\frac{1}{7} \) batches