geniusy_2006
kambrea21
week_1_problem_set.docx|
The following histogram shows the scores on the first exam for a statistics class. |
6.
value: 10.00 points
Required information
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a. |
How many students took the exam? |
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Number of students |
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References
eBook & Resources
WorksheetDifficulty: 2 IntermediateLearning Objective: 02-04 Display a frequency distribution using a histogram or frequency polygon.
7.
value: 10.00 points
Required information
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b. |
What is the class interval? |
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Class interval |
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References
eBook & Resources
WorksheetDifficulty: 2 IntermediateLearning Objective: 02-04 Display a frequency distribution using a histogram or frequency polygon.
8.
value: 10.00 points
Required information
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c. |
What is the class midpoint for the first class? |
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Midpoint |
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References
eBook & Resources
WorksheetDifficulty: 2 IntermediateLearning Objective: 02-04 Display a frequency distribution using a histogram or frequency polygon.
9.
value: 10.00 points
Required information
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d. |
How many students earned a score of less than 70? |
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Number of students |
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5.
value: 10.00 points
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A data set consists of 83 observations. How many classes would you recommend for a frequency distribution? |
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Classes |
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4.
value: 10.00 points
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Molly's Candle Shop has several retail stores in the coastal areas of North and South Carolina. Many of Molly's customers ask her to ship their purchases. The following chart shows the number of packages shipped per day for the last 100 days. |
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a. |
What is this chart called? |
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b. |
What is the total number of frequencies? |
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Frequencies |
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c. |
What is the class interval? |
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Class interval |
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d. |
What is the class frequency of the 0 up to 5 class? |
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Class frequency |
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e. |
What is the relative frequency of the 0 up to 5 class? (Round your answer to 2 decimal places.) |
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Relative frequency |
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f. |
What is the midpoint of the 20 up to 25 class? (Round your answer to 1 decimal place.) |
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Midpoint |
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g. |
On how many days were there 20 or more packages shipped? |
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Number of days |
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3.
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A set of data contains 53 observations. The minimum value is 42 and the maximum value is 129. The data are to be organized into a frequency distribution. |
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a. |
How many classes would you suggest? |
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Classes |
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b. |
What would you suggest as the lower limit of the first class? (Select the best value for the data.) |
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Lower limit |
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2.
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In a marketing study, 100 consumers were asked to select the best digital music player from the iPod, the iRiver, and the Magic Star MP3. To summarize the consumer responses with a frequency table, how many classes would the frequency table have? |
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Classes |
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value: 10.00 points
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A pie chart shows the relative market share of cola products. The “slice” for Pepsi-Cola has a central angle of 90 degrees. What is its market share? |
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Market share |
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