Question 1

For all normal curves, one standard deviation above and below the mean constitutes roughly 95% of cases.

Accepted Answer

A) True 
 B)False  False

Question 2

Normal curves exist only in theory, not in reality.

Accepted Answer

A) True 
 B)False  True

Question 3

Answer questions 15-16 using the following frequency distribution:
NUMBER OF BROTHERS AND SISTERS
  
-What is the standard deviation?

Accepted Answer

A)  2.7 
B)  4.4 
C)  7.5 
D)  19 
A)  2.7 
B)  4.4 
C)  7.5 
D)  19 B

Question 4

What is the mean deviation of the following numbers? 9, 12, 14, 18, 22

Accepted Answer

A)  0 
B)  4 
C)  5 
D)  20 
A)  0 
B)  4 
C)  5 
D)  20

Question 5

What do measures of dispersion tell us?

Accepted Answer

Measures of dispersion describ

Question 6

Answer questions 15-16 using the following frequency distribution:
NUMBER OF BROTHERS AND SISTERS
  
-What is the variance?

Accepted Answer

A)  3 
B)  7.5 
C)  19 
D)  38 
A)  3 
B)  7.5 
C)  19 
D)  38

Question 7

Use the following data to answer questions :
2, 7, 4, 4, 1, 2, 2, 3, 1, 2, 4, 5.
-What is the interquartile range?

Accepted Answer

A)  2 
B)  5 
C)  6 
D)  7 
A)  2 
B)  5 
C)  6 
D)  7

Question 8

The interquartile range is calculated by subtracting the first quartile from the highest value.

Accepted Answer

A) True 
 B)False

Question 9

The 2006 GSS reports the number of weeks respondents worked in the year prior. Answer questions using the following selection from this sample:
25, 29, 32, 38, 42, 46, 50, 52
-What is the interquartile range?

Accepted Answer

A)  17 
B)  25 
C)  27 
D)  40 
A)  17 
B)  25 
C)  27 
D)  40

Question 10

What is the mean deviation of the following numbers? 68, 70, 76, 84, 87, 89

Accepted Answer

A)  0 
B)  7.67 
C)  46 
D)  76 
A)  0 
B)  7.67 
C)  46 
D)  76

Question 11

Use the following data to answer questions :
2, 7, 4, 4, 1, 2, 2, 3, 1, 2, 4, 5.
-What is the standard deviation?

Accepted Answer

A)  1.8 
B)  3.2 
C)  7 
D)  10.2 
A)  1.8 
B)  3.2 
C)  7 
D)  10.2

Question 12

The 2006 GSS reports the number of weeks respondents worked in the year prior. Answer questions using the following selection from this sample:
25, 29, 32, 38, 42, 46, 50, 52
-What is the standard deviation?

Accepted Answer

A)  7.03 
B)  9.95 
C)  49.4 
D)  52 
A)  7.03 
B)  9.95 
C)  49.4 
D)  52

Question 13

Variance is calculated by averaging the deviations from the mean.

Accepted Answer

A) True 
 B)False

Question 14

The 2006 GSS reports the number of weeks respondents worked in the year prior. Answer questions using the following selection from this sample:
25, 29, 32, 38, 42, 46, 50, 52
-What is the range?

Accepted Answer

A)  25 
B)  27 
C)  40 
D)  52 
A)  25 
B)  27 
C)  40 
D)  52

Question 15

What is the sum of squares of the following numbers? 9, 12, 14, 18, 22

Accepted Answer

A)  4 
B)  81 
C)  104 
D)  484 
A)  4 
B)  81 
C)  104 
D)  484

Question 16

It is impossible to have two distributions with identical measures of central tendency, but different values for their standard deviation.

Accepted Answer

A) True 
 B)False

Question 17

For all normal curves, two standard deviations above the mean constitute roughly ------------ of all cases.

Accepted Answer

A)  47.5% 
B)  68% 
C)  95% 
D)  100% 
A)  47.5% 
B)  68% 
C)  95% 
D)  100%

Question 18

Use the following data to answer questions :
2, 7, 4, 4, 1, 2, 2, 3, 1, 2, 4, 5.
-What is the range?

Accepted Answer

A)  2 
B)  5 
C)  6 
D)  7 
A)  2 
B)  5 
C)  6 
D)  7

Question 19

What is the interquartile range of the following numbers? 9, 12, 14, 18, 22

Accepted Answer

A)  9.5 
B)  10 
C)  13 
D)  14 
A)  9.5 
B)  10 
C)  13 
D)  14

Question 20

Determine the range and interquartile range for the following data: 15, 22, 25, 16, 10, 19, 24, 68, 17, 24.
a. Range:

Accepted Answer

The answer of Determine the range and interquartile range for...

For all normal curves, one standard deviation above and below the mean constitutes roughly 95% of cases.

Normal curves exist only in theory, not in reality.

Answer questions 15-16 using the following frequency distribution: NUMBER OF BROTHERS AND SISTERS -What is the standard deviation?

What is the mean deviation of the following numbers? 9, 12, 14, 18, 22

What do measures of dispersion tell us?

Answer questions 15-16 using the following frequency distribution: NUMBER OF BROTHERS AND SISTERS -What is the variance?

Use the following data to answer questions : 2, 7, 4, 4, 1, 2, 2, 3, 1, 2, 4, 5. -What is the interquartile range?

The interquartile range is calculated by subtracting the first quartile from the highest value.

The 2006 GSS reports the number of weeks respondents worked in the year prior. Answer questions using the following selection from this sample: 25, 29, 32, 38, 42, 46, 50, 52 -What is the interquartile range?

What is the mean deviation of the following numbers? 68, 70, 76, 84, 87, 89

Use the following data to answer questions : 2, 7, 4, 4, 1, 2, 2, 3, 1, 2, 4, 5. -What is the standard deviation?

The 2006 GSS reports the number of weeks respondents worked in the year prior. Answer questions using the following selection from this sample: 25, 29, 32, 38, 42, 46, 50, 52 -What is the standard deviation?

Variance is calculated by averaging the deviations from the mean.

The 2006 GSS reports the number of weeks respondents worked in the year prior. Answer questions using the following selection from this sample: 25, 29, 32, 38, 42, 46, 50, 52 -What is the range?

What is the sum of squares of the following numbers? 9, 12, 14, 18, 22

It is impossible to have two distributions with identical measures of central tendency, but different values for their standard deviation.

For all normal curves, two standard deviations above the mean constitute roughly ------------ of all cases.

Use the following data to answer questions : 2, 7, 4, 4, 1, 2, 2, 3, 1, 2, 4, 5. -What is the range?

What is the interquartile range of the following numbers? 9, 12, 14, 18, 22

Determine the range and interquartile range for the following data: 15, 22, 25, 16, 10, 19, 24, 68, 17, 24. a. Range:

Concepts, Variables, and Measurement

Frequency Tables

Measures of Central Tendency

Probability and the Normal Curve

Probabilityfrom Samples to Statistics

Cross-Tabulation Tables and Chi-Square

Measures of Association for Categorical Variables

Analysis of Variance

Correlation and Regression

Filters

Exam 4: Measures of Dispersion

For all normal curves, one standard deviation above and below the mean constitutes roughly 95% of cases.

Normal curves exist only in theory, not in reality.

Answer questions 15-16 using the following frequency distribution: NUMBER OF BROTHERS AND SISTERS -What is the standard deviation?

What is the mean deviation of the following numbers? 9, 12, 14, 18, 22

What do measures of dispersion tell us?

Answer questions 15-16 using the following frequency distribution: NUMBER OF BROTHERS AND SISTERS -What is the variance?

Use the following data to answer questions : 2, 7, 4, 4, 1, 2, 2, 3, 1, 2, 4, 5. -What is the interquartile range?

The interquartile range is calculated by subtracting the first quartile from the highest value.

The 2006 GSS reports the number of weeks respondents worked in the year prior. Answer questions using the following selection from this sample: 25, 29, 32, 38, 42, 46, 50, 52 -What is the interquartile range?

What is the mean deviation of the following numbers? 68, 70, 76, 84, 87, 89

Use the following data to answer questions : 2, 7, 4, 4, 1, 2, 2, 3, 1, 2, 4, 5. -What is the standard deviation?

The 2006 GSS reports the number of weeks respondents worked in the year prior. Answer questions using the following selection from this sample: 25, 29, 32, 38, 42, 46, 50, 52 -What is the standard deviation?

Variance is calculated by averaging the deviations from the mean.

The 2006 GSS reports the number of weeks respondents worked in the year prior. Answer questions using the following selection from this sample: 25, 29, 32, 38, 42, 46, 50, 52 -What is the range?

What is the sum of squares of the following numbers? 9, 12, 14, 18, 22

It is impossible to have two distributions with identical measures of central tendency, but different values for their standard deviation.

For all normal curves, two standard deviations above the mean constitute roughly ------------ of all cases.

Use the following data to answer questions : 2, 7, 4, 4, 1, 2, 2, 3, 1, 2, 4, 5. -What is the range?

What is the interquartile range of the following numbers? 9, 12, 14, 18, 22

Determine the range and interquartile range for the following data: 15, 22, 25, 16, 10, 19, 24, 68, 17, 24. a. Range:

Concepts, Variables, and Measurement

Frequency Tables

Measures of Central Tendency

Probability and the Normal Curve

Probabilityfrom Samples to Statistics

Cross-Tabulation Tables and Chi-Square

Measures of Association for Categorical Variables

Analysis of Variance

Correlation and Regression

Filters