Question1.Which of the following statements about interpreting standard deviatio

1.Which of the following statements about interpreting standard deviation is true?

A.Neither Chebyshev’s Rule nor the Emprical Rule require any assumptions about the frequency distribution.

B.The Empirical Rule can’t be applied unless the frequency distribution is mound-shaped and symmetric. Chebyshev’s Rule can

be applied to any data set, regardless of the shape of its frequency distribution.

C.Neither the Empirical Rule nor Chebyshev’s Rule can be applied to data unless the frequency distribution is mound-shaped

and symmetrical.

D.Chebyshev’s Rule can’t be applied unless the frequency distribution is mound-shaped and symmetric. The Empirical Rule can

be applied to any data set, regardless of the shape of its frequency distribution.

2.Consider the following distribution:

Which of the following would you expect?

A.The mean is greater than the mode, which in turn is greater than the median.

B.The mean is greater than the median, and the median is greater than the mode.

C.There’s no difference in the values of the mean, median, and mode.

D.The mean is less than the median, and the median is less than the mode.

3.Use the following data sample to answer the question.

4, 14, 6, 9, 21, 3, 7, 10

What is the medianof this data sample?

A.9.25

B.There’s no median value.

C.8

D.7

4.When obtaining data by _______ it’s mostimportant to inquire about the purposes of the original

experimenter.

A.conducting a survey

B.performing a designed experiment

C.collecting data observationally

D.reading a published source

5.Which of the following statements is trueabout a stem-and-leaf plot?

A.It separates data at the decimal point, creating horizontal rows whose values are close together.

B.It involves creating columns of dots, one for each datum in the sample.

C.Stem-and-leaf plots are histograms whose bars have been arranged in decreasing order of frequency.

D.It uses vertical bars to illustrate a probability distribution.

6.A study was conducted of the 12-month earnings per share for two categories of airline companies, with

the result shown in the chart below.

Based on the data, which of the following statements is correct?

Large

Airlines

Small

Airlines

$4.36 $1.60

6.19 –1.98

–0.42 1.03

3.73 –0.21

0.26 –1.15

6.27 4.19

0.59

1.52

1.97

4.57

0.05

A.The large airlines have a mean earnings per share of 3.40, and the small airlines have a standard deviation of 2.01.

B.The large airlines have a mean earnings per share of 3.40, and the small airlines have a mean earnings per share of 1.22.

C.The large airlines have a standard deviation of 2.88, and the small airlines have a standard deviation of 4.04.

D.The large airlines have a variance of 4.04, and the small airlines have a variance of 8.30.

7.When creating a histogram, it’s important to ensure that the classes of data satisfy which properties?

A.They must be mutually exclusive and exhaustive.

B.They must include each interval on the number line.

C.They must be all the same size.

D.No requirements are made; the individual creating the graph is free to choose any classes.

8.Use the following data sample to answer the question.

4, 14, 6, 9, 21, 3, 7, 10

What is the meanof this data sample?

A.There’s no mean value.

B.9.25

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