1. Questions are in the field of Statistics for business set 1 Given the data set 3, 6, 2, 9, –1, 0, compute ?(x + 1)2.
2. 25
3. 625
4. 175
5. 137

77.5
1. 88
2. 77.7
3. 77

To answer the question, refer to the following data.

Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values:

1, 2, 2, 3, 4, 5, 5, 5, 5, 6

What is the variance for the data values?

1. 1.6
2. 2.844
3. 1.687
4. 2.56

The large airlines have a mean earnings per share of 3.40, and the small airlines have a standard deviation of 2.08.
1. The large airlines have a variance of 4.04, and the small airlines have a variance of 8.30.
2. The large airlines have a standard deviation of 2.88, and the small airlines have a standard deviation of 4.04.
3. 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.

Note: Answer A seems to be the closest, but the values listed do not exactly match the actual   values. The actual values are:

Large Airlines     Small Airlines

Mean                                    3.3983                   1.1073

Standard deviation          2.8811                   2.0101

Variance                              8.3007                   4.0404

Use the following data sample to answer the question.

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

What is the variance of this data sample?

If there are an odd number of data values in a set, the median will be the
1. average of all of the values divided by the number of values in the set.
2. value that appears in the center.
3. value that appears the greatest number of times.
4. average of the two end values.

To answer the question, refer to the following list of raw data.

63, 71, 72, 77, 77, 78, 86, 77, 88, 88

What is the mode for the data?

1. 88
2. 77.5
3. 77
4. 77.7

Several ways to make a bar graph deceptive appear below. Which of these is sometimes used to

exaggerate differences from one data value to the next?

1. Starting the vertical axis at a point greater than zero
2. Making the graph taller than it needs to be
3. Making the graph shorter than it needs to be
4. A gap in the vertical axis

Which of the following statements is true about a stem-and-leaf plot?
1. It uses vertical bars to illustrate a probability distribution.
2. It separates data at the decimal point, creating horizontal rows whose values are close together.
3. Stem-and-leaf plots are histograms whose bars have been arranged in decreasing order of frequency.
4. It involves creating columns of dots, one for each datum in the sample.

Use the following data sample to answer the question.

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

What is the mean of this data sample?

1. There’s no mean value.
2. 9.25
3. 7
4. 8

A population is a collection of _______ about which we will measure certain characteristics or

properties, called _______.

1. people, traits
2. individuals, sample values
3. data, numbers
4. experimental units, variables

What is the difference between a histogram and a bar chart?
1. A histogram and a bar chart both reflect qualitative data.
2. A histogram reflects qualitative data, while the bar chart represents quantitative data.
3. The adjacent rectangles in a bar chart have a gap, while those for a histogram don’t.
4. The adjacent rectangles in a histogram have a gap, while those for a bar chart don’t.