Exam 2: Descriptive Statistics

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Scores on Ms. Bond's test have a mean of 70 and a standard deviation of 11. Michelle has a score of 48. Convert Michelle's score to a z-score. (Round to two decimal places if necessary.)

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You have been asked to reorganize the Excel table below into order of sales using the Sales column. Which option will allow you to do this quickly? ? Customer ID First Last Sales Quantity Discount Profit CG-12520 Claire Gute \ 261.96 2 0 \ 41.91 DV-13045 Darrin VanHuff \ 14.62 2 0 \ 16.87 SO-20335 Sean ODonnell \ 957.58 5 0.45 \ (383.03) BH-11710 Brosina Hoffman \ 48.86 7 0 \ 14.17 AA-10480 Andrew Allen \ 25.55 3 0.2 \ 5.44 IM-15070 Irene Maddox \ 407.98 3 0.2 \ 132.59 HP-14815 Harold Pawlan \ 68.81 5 0.8 (123.86) PK-19075 Pete Kriz \ 665.88 6 0 \ 13.32 AG-10270 Alejandro Grove \ 55.50 2 0 \ 9.99 ZD-21925 Zuschuss Donatelli \ 8.56 2 0 \ 2.48 ? ?

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Compute the IQR for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22

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The simplest measure of variability is the

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__________ are collected from several entities at the same point in time.

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Consider the data below. What percentage of students scored grade C? Grades Number of students A 16 B 28 C 33 D 13 Total 90

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Identify the shape of the distribution in the figure below. Identify the shape of the distribution in the figure below.

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Select the histogram that is moderately skewed right. ​ Select the histogram that is moderately skewed right. ​   ​

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Compute the coefficient of variation for the following sample data. 32, 41, 36, 24, 29, 30, 40, 22, 25, 37

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The College Board originally scaled SAT scores so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100. Assuming scores follow a bell-shaped distribution, use the empirical rule to find the percentage of students who scored less than 400.

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Compute the 50th percentile for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22

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The variance is based on the

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Compute the relative frequency for students who earned a C shown in the table of grades below. ? Grades Number of Students 10 31 36 6 ?

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In a survey of patients in a local hospital, 62.42% of the respondents indicated that the health care providers needed to spend more time with each patient. Who makes up the population? ​

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The College Board originally scaled SAT scores so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100. Assuming scores follow a bell-shaped distribution, use the empirical rule to find the percentage of students who scored greater than 700.

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Compute the mode for the following data. 12, 16, 19, 10, 12, 11, 21, 12, 21, 10

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The __________ is a point estimate of the population mean for the variable of interest.

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The act of collecting data that are representative of the population data is called

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A manager of a fast food restaurant wants the drive-thru employee to ask every fifth customer if he or she is satisfied with the service. Who makes up the sample?

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James's manager asked him to sort the last names in the following list in descending order. What does this mean? ? Customer ID First Last Sales Quantity Discount Profit CG-12520 Claire Gute \ 261.96 2 0 \ 41.91 DV-13045 Darrin VanHuff \ 14.62 2 0 \ 16.87 SO-20335 Sean ODonnell \ 957.58 5 0.45 \ (383.03) BH-11710 Brosina Hoffman \ 48.86 7 0 \ 14.17 AA-10480 Andrew Allen \ 25.55 3 0.2 \ 5.44 IM-15070 Irene Maddox \ 407.98 3 0.2 \ 132.59 HP-14815 Harold Pawlan \ 68.81 5 0.8 (123.86) PK-19075 Pete Kriz \ 665.88 6 0 \ 13.32 AG-10270 Alejandro Grove \ 55.50 2 0 \ 9.99 ZD-21925 Zuschuss Donatelli \ 8.56 2 0 \ 2.48 ? ?

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