Hello,Can someone help me with 6 questions. Can this be done within 3 hours?

PAGE 1.

Identify each of the following variables as qualitative or quantitative.

a. Clothing styleClothing style

b. NationalityNationality

c. Calories in a cheese Danish Calories in a cheese danish

d. Amount one paid on taxes Amount one paid on taxes

a. Is the variable qualitative or quantitative? Why

A. Clothing style Clothing style is a qualitative qualitative variable. Its values are not are not numerical.

B. Clothing style Clothing style is a quantitative variable. Its values are not numerical.

C. Clothing style

Clothing style is a qualitative variable. Its values are numerical.

D. Clothing style Clothing style is a Quantitative quantitative

variable. Its values are are numerical.

b. Is the variable qualitative or quantitative? Why?

1. Nationality Nationality is a qualitative variable. Its values are numerical.
2. Nationality Nationality is a Quantitative quantitative variable. Its values Are are numerical.
3. Nationality Nationality is a quantitative variable. Its values are not numerical.
4. Nationality Nationality is a Qualitative qualitative variable. Its values are not are not numerical.

c. Is the variable qualitative or quantitative? Why?

A. Calories in a cheese Danish Calories in a cheese danish is a quantitative variable. Its values are not numerical.

B. Calories in a cheese Danish Calories in a cheese danish

is a qualitative qualitative variable. Its values are not are not numerical.

C. Calories in a cheese Danish Calories in a cheese danish is a Quantitative quantitative

variable. Its values are are numerical.

D.Calories in a cheese Danish Calories in a cheese danish is a qualitative variable. Its values are numerical.

d. Is the variable qualitative or quantitative? Why?

A. Amount one paid on taxes Amount one paid on taxes

is a qualitative variable. Its values are numerical.

B. Amount one paid on taxes Amount one paid on taxes

is a qualitative qualitative variable. Its values

are not are not numerical.

C. Amount one paid on taxes Amount one paid on taxes

is a quantitative quantitative variable. Its values are are numerical.

1. Amount one paid on taxes Amount one paid on taxes is a quantitative variable. Its values are not numerical.

Page 2

COMPLETE THE TABLE

Grade on Business Statistics Exam Frequency Relative Frequency

A: 90-100 _____ 0.08

B: 80-89 75 ____

C: 65-79 108 ____

D: 50-64 48 _____

F: Below 50 45 ______

Total 300 1.00

Grade on Business Statistics Exam Frequency Relative Frequency

A: 90-100 _____ 0.08

B: 80-89 75 ____

C: 65-79 108 ____

D: 50-64 48 _____

F: Below 50 45 ______

Total 300 1.00

Page 3

Use the relative frequency table shown to the right to calculate the number of the

600 measurements falling into each of the measurement classes. Then graph a frequency histogram for these data.

Measurement Class Relative Frequency

0.5-2.5 0.15

2.5-4.5 0.20

4.5-6.5 0.10

6.5-8.5 0.15

8.5-10.5 0.10

10.5-12.5 0.10

12.5-14.5 0.15

14.5-16.5 0.05

Calculate the number of measurements that fall into each class.

Measurement Class Frequency

0.5-2.5 _______

2.5-4.5 _______

4.5-6.5 _______

6.5-8.5 _______

8.5-10.5 ________

10.5-12.5 ________

12.5-14.5 _________

14.5-16.5 ________

Choose the correct graph

Page 5

Calculate the mean and median of the following grade point averages.

3.6 3.4 2.3 3.1 3.8 2.8

Mean = ____ (Round to two decimal places as needed.)

Median = ____

(Round to two decimal places as needed.)

Page 6

Calculate the range, variance, and standard deviation for the following sample.

4, 4, 7, 3, 8, 5, 5, 7, 3, 3

Range =

Sample variance, s square = ____________ (Round to two decimal places as needed.)

Sample standard deviation, = ____________ (Round to two decimal places as needed.)

Page 7

Consider the following sample of five measurements.

4, 1, 5, 0, 6

1. Calculate the range, s squareds2, and s.

Range =

S2 = (Round to one decimal place as needed.)

S = (Round to two decimal places as needed.)

b. Add 2 to each measurement and repeat part a.

range =

s squareds2= _____ (Round to one decimal place as needed.)

s = ___ (Round to two decimal places as needed.)

c. Subtract 3 from each measurement and repeat part a.

range =

s squareds2= (Round to one decimal place as needed.)

s = (Round to two decimal places as needed

Considering your answers to parts a, b, and c, what seems to be the effect on the variability of a data set by adding the same number to or subtracting the same number from each measurement?

1. The variability is multiplied by the amount added to or subtracted from each measurement.
2. There is no effect on the variability.
3. The variability is decreased by the amount subtracted from each measurement.
4. The variability is increased by the amount added to each measurement.