Question 1

The middle score in a distribution after the scores have been arranged from highest to lowest or lowest to highest is the _____.​

Accepted Answer

A) mean​ 
B) median 
C) mode 
D) standard deviation 
A) mean​ 
B) median 
C) mode 
D) standard deviation

Question 2

Qualitative variable is to quantitative variable as ____ is to _____.

Accepted Answer

A) categorical variable; numerical variable 
B) numerical variable; categorical variable 
C) ordinal, interval, or ratio data; nominal data 
D) categorical variable and ordinal, interval, or ratio data; numerical variable and nominal data 
A) categorical variable; numerical variable 
B) numerical variable; categorical variable 
C) ordinal, interval, or ratio data; nominal data 
D) categorical variable and ordinal, interval, or ratio data; numerical variable and nominal data

Question 3

If Joe scored 25 on a test with a mean of 20 and a standard deviation of 5 what is his z-score?​

Accepted Answer

A) 25 
B) +1.0 
C) 0.0 
D) cannot be determined 
A) 25 
B) +1.0 
C) 0.0 
D) cannot be determined

Question 4

If the shape of a frequency distribution is lopsided, with a long tail projecting longer to the right than to the left, how would the distribution be skewed?​

Accepted Answer

A) normally​ 
B) negatively 
C) positively 
D) average 
A) normally​ 
B) negatively 
C) positively 
D) average

Question 5

A line graph of the frequencies of individual scores is a _____.​

Accepted Answer

A) histogram 
B) frequency distribution 
C) frequency polygon 
D) bar graph 
A) histogram 
B) frequency distribution 
C) frequency polygon 
D) bar graph

Question 6

When Ms. Jones calculated her students' accounting test scores, she noticed that one student had an extremely low score. Which measure of central tendency should not be used in this situation?​

Accepted Answer

A) mean 
B) standard deviation 
C) mode 
D) median 
A) mean 
B) standard deviation 
C) mode 
D) median

Question 7

Explain the difference between qualitative and quantitative variables noting the relationship of nominal, ordinal, interval, and ratio data to these terms.​

Accepted Answer

A qualitative variable is a categorical

Question 8

A number that characterizes the "middleness" of an entire distribution is _____.​

Accepted Answer

A) a measure of central tendency 
B) a measure of variability 
C) an inferential statistic 
D) the standard deviation 
A) a measure of central tendency 
B) a measure of variability 
C) an inferential statistic 
D) the standard deviation

Question 9

A z-score is most affected by the​

Accepted Answer

A) median. 
B) mode. 
C) standard deviation. 
D) range. 
A) median. 
B) mode. 
C) standard deviation. 
D) range.

Question 10

_____ is to organizing data using a table as _____ is to organizing data using a figure.​

Accepted Answer

A) Histogram; bar graph 
B) Frequency polygon; bar graph 
C) Frequency distribution; histogram 
D) Frequency polygon; frequency distribution 
A) Histogram; bar graph 
B) Frequency polygon; bar graph 
C) Frequency distribution; histogram 
D) Frequency polygon; frequency distribution

Question 11

In a psychology class of 100 students, test scores are normally distributed with a mean of 80 and a standard deviation of 5. Approximately what percentage of students have scores between 70 and 90?​

Accepted Answer

A) 68% 
B) 80% 
C) 95% 
D) 99% 
A) 68% 
B) 80% 
C) 95% 
D) 99%

Question 12

A graphical representation of a frequency distribution in which vertical bars centered above scores on the x-axis touch each other is a _____.

Accepted Answer

A) histogram 
B) bar graph 
C) pie graph 
D) frequency polygon 
A) histogram 
B) bar graph 
C) pie graph 
D) frequency polygon

Question 13

Seven students reported the following individual earnings from their sale of wrapping paper: $7, $13, $3, $5, $2, $9, and $3. In this distribution of individual earnings, the mean is _____ the mode and _____ the median.​

Accepted Answer

A) equal to; equal to 
B) greater than; equal to 
C) equal to; less than 
D) greater than; greater than 
A) equal to; equal to 
B) greater than; equal to 
C) equal to; less than 
D) greater than; greater than

Question 14

If the average height for women is normally distributed with a mean of 65 inches and a standard deviation of 2.5 inches, then approximately 95% of all women should be between _____ and _____ inches in height.​

Accepted Answer

A) 62.5; 67.7 
B) 60; 70 
C) 57.5; 72.5 
D) cannot determine from the information given 
A) 62.5; 67.7 
B) 60; 70 
C) 57.5; 72.5 
D) cannot determine from the information given

Question 15

Which of the following is FALSE?​

Accepted Answer

A) The range is a simplistic measure of variation that does not use all scores in the distribution in its calculation. 
B) The average deviation is a more sophisticated measure of variation than the range in which all scores are used but which may not weight extreme scores adequately. 
C) The standard deviation is the least sophisticated measure of variation and the least frequently used. 
D) all of the options are true 
A) The range is a simplistic measure of variation that does not use all scores in the distribution in its calculation. 
B) The average deviation is a more sophisticated measure of variation than the range in which all scores are used but which may not weight extreme scores adequately. 
C) The standard deviation is the least sophisticated measure of variation and the least frequently used. 
D) all of the options are true

Question 16

The calculation of the average deviation differs from the calculation of the standard deviation in that when calculating the average deviation the difference scores are​

Accepted Answer

A) squared. 
B) converted to absolute values. 
C) squared and converted to absolute values. 
D) it does not differ. 
A) squared. 
B) converted to absolute values. 
C) squared and converted to absolute values. 
D) it does not differ.

Question 17

Sue took a test in both biology and math last week. The biology test had a mean of 70 and a standard deviation of 7 whereas the math test had a mean of 75 and a standard deviation of 10. Sue scored a 76 on the biology test and a 76 on the math test. On which test did she do better in comparison to the rest of the class?​

Accepted Answer

A) the math test 
B) the biology test 
C) she did the same on each test 
D) cannot be determined 
A) the math test 
B) the biology test 
C) she did the same on each test 
D) cannot be determined

Question 18

Calculate S (standard deviation) and A.D. (average deviation) for the following sample.
2, 2, 6, 9, 10, 10, 15, 18, 18, 20.

Accepted Answer

​The standard deviat

Question 19

For a hypothetical normal distribution of test scores, approximately 95% fall between 38 and 62, 2.5% are below 38, and 2.5% are above 62. Given this information, (a) the mode = _________ and (b) the standard deviation = _________.​

Accepted Answer

The mode is 50 (alon

Question 20

Approximately what percentage of scores are between z=1 and z=2?​

Accepted Answer

A) 50 
B) 68 
C) 16 
D) 13.5 
A) 50 
B) 68 
C) 16 
D) 13.5

The middle score in a distribution after the scores have been arranged from highest to lowest or lowest to highest is the _____.

Qualitative variable is to quantitative variable as is to _.

If Joe scored 25 on a test with a mean of 20 and a standard deviation of 5 what is his z-score?

If the shape of a frequency distribution is lopsided, with a long tail projecting longer to the right than to the left, how would the distribution be skewed?

A line graph of the frequencies of individual scores is a _____.

When Ms. Jones calculated her students' accounting test scores, she noticed that one student had an extremely low score. Which measure of central tendency should not be used in this situation?

Explain the difference between qualitative and quantitative variables noting the relationship of nominal, ordinal, interval, and ratio data to these terms.

A number that characterizes the "middleness" of an entire distribution is _____.

A z-score is most affected by the

_ is to organizing data using a table as _ is to organizing data using a figure.

In a psychology class of 100 students, test scores are normally distributed with a mean of 80 and a standard deviation of 5. Approximately what percentage of students have scores between 70 and 90?

A graphical representation of a frequency distribution in which vertical bars centered above scores on the x-axis touch each other is a _____.

Seven students reported the following individual earnings from their sale of wrapping paper: $7, $13, $3, $5, $2, $9, and $3. In this distribution of individual earnings, the mean is _ the mode and _ the median.

If the average height for women is normally distributed with a mean of 65 inches and a standard deviation of 2.5 inches, then approximately 95% of all women should be between _ and _ inches in height.

Which of the following is FALSE?

The calculation of the average deviation differs from the calculation of the standard deviation in that when calculating the average deviation the difference scores are

Calculate S (standard deviation) and A.D. (average deviation) for the following sample. 2, 2, 6, 9, 10, 10, 15, 18, 18, 20.

For a hypothetical normal distribution of test scores, approximately 95% fall between 38 and 62, 2.5% are below 38, and 2.5% are above 62. Given this information, (a) the mode = _ and (b) the standard deviation = _.

Approximately what percentage of scores are between z=1 and z=2?

Thinking Like a Scientist

Getting Started

Defining Measuring and Manipulating Variables

Descriptive Methods

Correlational Methods and Statistics

Probability and Hypothesis Testing

Introduction to Inferential Statistics

Experimental Design and Analysis I

Experimental Design and Analysis II

Experimental Design and Analysis III

Experimental Design and Analysis Iv

Quasi Experimental and Single Case Designs

Nonparametric Inferential Statistics

APA Communication Guidelines

Filters

Exam 5: Data Organization and Descriptive Statistics

The middle score in a distribution after the scores have been arranged from highest to lowest or lowest to highest is the _____.​

Qualitative variable is to quantitative variable as ____ is to _____.

If Joe scored 25 on a test with a mean of 20 and a standard deviation of 5 what is his z-score?​

If the shape of a frequency distribution is lopsided, with a long tail projecting longer to the right than to the left, how would the distribution be skewed?​

A line graph of the frequencies of individual scores is a _____.​

When Ms. Jones calculated her students' accounting test scores, she noticed that one student had an extremely low score. Which measure of central tendency should not be used in this situation?​

Explain the difference between qualitative and quantitative variables noting the relationship of nominal, ordinal, interval, and ratio data to these terms.​

A number that characterizes the "middleness" of an entire distribution is _____.​

A z-score is most affected by the​

_____ is to organizing data using a table as _____ is to organizing data using a figure.​

In a psychology class of 100 students, test scores are normally distributed with a mean of 80 and a standard deviation of 5. Approximately what percentage of students have scores between 70 and 90?​

A graphical representation of a frequency distribution in which vertical bars centered above scores on the x-axis touch each other is a _____.

Seven students reported the following individual earnings from their sale of wrapping paper: $7, $13, $3, $5, $2, $9, and $3. In this distribution of individual earnings, the mean is _____ the mode and _____ the median.​

If the average height for women is normally distributed with a mean of 65 inches and a standard deviation of 2.5 inches, then approximately 95% of all women should be between _____ and _____ inches in height.​

Which of the following is FALSE?​

The calculation of the average deviation differs from the calculation of the standard deviation in that when calculating the average deviation the difference scores are​

Calculate S (standard deviation) and A.D. (average deviation) for the following sample. 2, 2, 6, 9, 10, 10, 15, 18, 18, 20.

For a hypothetical normal distribution of test scores, approximately 95% fall between 38 and 62, 2.5% are below 38, and 2.5% are above 62. Given this information, (a) the mode = _________ and (b) the standard deviation = _________.​

Approximately what percentage of scores are between z=1 and z=2?​

Thinking Like a Scientist

Getting Started

Defining Measuring and Manipulating Variables

Descriptive Methods

Correlational Methods and Statistics

Probability and Hypothesis Testing

Introduction to Inferential Statistics

Experimental Design and Analysis I

Experimental Design and Analysis II

Experimental Design and Analysis III

Experimental Design and Analysis Iv

Quasi Experimental and Single Case Designs

Nonparametric Inferential Statistics

APA Communication Guidelines

Filters

The middle score in a distribution after the scores have been arranged from highest to lowest or lowest to highest is the _____.

Qualitative variable is to quantitative variable as is to _.

If Joe scored 25 on a test with a mean of 20 and a standard deviation of 5 what is his z-score?

If the shape of a frequency distribution is lopsided, with a long tail projecting longer to the right than to the left, how would the distribution be skewed?

A line graph of the frequencies of individual scores is a _____.

When Ms. Jones calculated her students' accounting test scores, she noticed that one student had an extremely low score. Which measure of central tendency should not be used in this situation?

Explain the difference between qualitative and quantitative variables noting the relationship of nominal, ordinal, interval, and ratio data to these terms.

A number that characterizes the "middleness" of an entire distribution is _____.

A z-score is most affected by the

_ is to organizing data using a table as _ is to organizing data using a figure.

In a psychology class of 100 students, test scores are normally distributed with a mean of 80 and a standard deviation of 5. Approximately what percentage of students have scores between 70 and 90?

Seven students reported the following individual earnings from their sale of wrapping paper: $7, $13, $3, $5, $2, $9, and $3. In this distribution of individual earnings, the mean is _ the mode and _ the median.

If the average height for women is normally distributed with a mean of 65 inches and a standard deviation of 2.5 inches, then approximately 95% of all women should be between _ and _ inches in height.

Which of the following is FALSE?

The calculation of the average deviation differs from the calculation of the standard deviation in that when calculating the average deviation the difference scores are

For a hypothetical normal distribution of test scores, approximately 95% fall between 38 and 62, 2.5% are below 38, and 2.5% are above 62. Given this information, (a) the mode = _ and (b) the standard deviation = _.

Approximately what percentage of scores are between z=1 and z=2?