Question 1

For a data set with a mean = 10 and standard deviation = 2, what is the z score corresponding to a raw score of 7?

Accepted Answer

A)  +1.5 
B)  -1.5 
C)  2 
D)  -2 
A)  +1.5 
B)  -1.5 
C)  2 
D)  -2

Question 2

The relationship between number of friends and happiness is weaker in adulthood than in childhood. You make a scatter plot for children and a scatter plot for adults. In each scatter plot, you have SPSS insert the best fitting straight line. The cluster of dots for adults compared to that for children):

Accepted Answer

A)  will be less spread out surrounding the best fitting straight line i.e., they will be closer to the line). 
B)  will be more spread out surrounding the best fitting straight line. 
C)  all dots will always fall on the straight line. 
D)  there will be a lack any apparent tilt in the line. 
A)  will be less spread out surrounding the best fitting straight line i.e., they will be closer to the line). 
B)  will be more spread out surrounding the best fitting straight line. 
C)  all dots will always fall on the straight line. 
D)  there will be a lack any apparent tilt in the line.

Question 3

The mean, median, and mode are all considered to be measures of

Accepted Answer

A)  inferential statistics. 
B)  effect size. 
C)  variability. 
D)  central tendency. 
A)  inferential statistics. 
B)  effect size. 
C)  variability. 
D)  central tendency.

Question 4

Use the following frequency distribution to answer questions 
  
-Which of the following is the lowest score in the frequency distribution?

Accepted Answer

A)  23 
B)  10 
C)  20 
D)  25 
A)  23 
B)  10 
C)  20 
D)  25

Question 5

A z score of 1.00 is located:

Accepted Answer

A)  one standard deviation below the mean. 
B)  below the mean but we cannot tell how far below. 
C)  above the mean but we cannot tell how far above. 
D)  one standard deviation above the mean. 
A)  one standard deviation below the mean. 
B)  below the mean but we cannot tell how far below. 
C)  above the mean but we cannot tell how far above. 
D)  one standard deviation above the mean.

Question 6

Use the following frequency distribution to answer questions 
  
-Which of the following ACT scores is the mode for the data shown in the frequency distribution?

Accepted Answer

A)  23 
B)  10 
C)  20 
D)  25 
A)  23 
B)  10 
C)  20 
D)  25

Question 7

To display the relationship between two quantitative variables, one should use

Accepted Answer

A)  a bar graph. 
B)  a histogram. 
C)  a scatterplot. 
D)  z scores. 
A)  a bar graph. 
B)  a histogram. 
C)  a scatterplot. 
D)  z scores.

Question 8

In a histogram, frequencies are presented on the____ and the score variable is presented on the _____.

Accepted Answer

A)  vertical axis; horizontal axis 
B)  horizontal axis; vertical axis 
C)  either axis; either axis 
D) -axis; Y-axis 
A)  vertical axis; horizontal axis 
B)  horizontal axis; vertical axis 
C)  either axis; either axis 
D) -axis; Y-axis

Question 9

How does multiple regression differ from simple regression?

Accepted Answer

A)  it contains multiple data points 
B)  it involves multiple dependent variables 
C)  it includes multiple independent/predictor variables 
D)  it can always be used to establish causality 
A)  it contains multiple data points 
B)  it involves multiple dependent variables 
C)  it includes multiple independent/predictor variables 
D)  it can always be used to establish causality

Question 10

________is the exact average deviation of data values from the mean in squared units, and _____________is the approximate average deviation of data values from the mean in regular units.

Accepted Answer

A)  Standard deviation; variance 
B)  Effect size; correlation 
C)  Variance; standard deviation 
D)  Negative correlation; positive correlation 
A)  Standard deviation; variance 
B)  Effect size; correlation 
C)  Variance; standard deviation 
D)  Negative correlation; positive correlation

Question 11

Use the following frequency distribution to answer questions 
  
-What is the most frequently occurring score in the frequency distribution?

Accepted Answer

A)  23 
B)  10 
C)  20 
D)  25 
A)  23 
B)  10 
C)  20 
D)  25

Question 12

What is Σ X for the following group of scores? 1, 2, 3, 4, 5

Accepted Answer

A)  3 
B)  5 
C)  15 
D)  30 
A)  3 
B)  5 
C)  15 
D)  30

Question 13

What position in a distribution of numbers corresponds to a z score of z = -2.00?

Accepted Answer

A)  two standard deviation units above the mean 
B)  two points above the mean 
C)  two standard deviation units below the mean 
D)  two points below the mean 
A)  two standard deviation units above the mean 
B)  two points above the mean 
C)  two standard deviation units below the mean 
D)  two points below the mean

Question 14

What kind of graph is used to display frequencies as bars without spaces between them?

Accepted Answer

A)  a bar graph 
B)  a histogram 
C)  a scatterplot 
D)  all of the above 
A)  a bar graph 
B)  a histogram 
C)  a scatterplot 
D)  all of the above

Question 15

A _________is a systematic arrangement of data values in which the unique data values are rank ordered and the frequencies are provided for each of these values.

Accepted Answer

A)  scatter plot 
B)  frequency distribution 
C)  line graph 
D)  mean plot 
A)  scatter plot 
B)  frequency distribution 
C)  line graph 
D)  mean plot

Question 16

If we were interested in predicting grade point average from the number of hours students spend on the internet what should we place on the vertical axis?

Accepted Answer

A)  grade point average 
B)  number of hours on the internet 
C)  students 
D)  either variable 
A)  grade point average 
B)  number of hours on the internet 
C)  students 
D)  either variable

Question 17

The absolute value of a correlation coefficient indicates the__________ of the relationship and the sign indicates the of the____________ relationship.

Accepted Answer

A)  causality; magnitude 
B)  direction; causality 
C)  strength; direction 
D)  strength; whether or not a relationship exists 
A)  causality; magnitude 
B)  direction; causality 
C)  strength; direction 
D)  strength; whether or not a relationship exists

Question 18

When calculating a correlation coefficient,_____________ can only be used when the data are related in a linear fashion.

Accepted Answer

A)  Cohen's d 
B)  Pearson's correlation 
C)  z score 
D)  F test 
A)  Cohen's d 
B)  Pearson's correlation 
C)  z score 
D)  F test

Question 19

A raw score above the mean of the distribution will result in a z score

Accepted Answer

A)  greater than zero 
B)  of zero 
C)  less than zero 
D)  equal to the mean of the distribution 
A)  greater than zero 
B)  of zero 
C)  less than zero 
D)  equal to the mean of the distribution

Question 20

A sample consists of n = 25 scores. How many of the scores are used to calculate the range?

Accepted Answer

A)  0 
B)  2 
C)  5 
D)  25 
A)  0 
B)  2 
C)  5 
D)  25

For a data set with a mean = 10 and standard deviation = 2, what is the z score corresponding to a raw score of 7?

The mean, median, and mode are all considered to be measures of

Use the following frequency distribution to answer questions -Which of the following is the lowest score in the frequency distribution?

A z score of 1.00 is located:

Use the following frequency distribution to answer questions -Which of the following ACT scores is the mode for the data shown in the frequency distribution?

To display the relationship between two quantitative variables, one should use

In a histogram, frequencies are presented on the and the score variable is presented on the _.

How does multiple regression differ from simple regression?

is the exact average deviation of data values from the mean in squared units, and _____is the approximate average deviation of data values from the mean in regular units.

Use the following frequency distribution to answer questions -What is the most frequently occurring score in the frequency distribution?

What is Σ X for the following group of scores? 1, 2, 3, 4, 5

What position in a distribution of numbers corresponds to a z score of z = -2.00?

What kind of graph is used to display frequencies as bars without spaces between them?

A _________is a systematic arrangement of data values in which the unique data values are rank ordered and the frequencies are provided for each of these values.

If we were interested in predicting grade point average from the number of hours students spend on the internet what should we place on the vertical axis?

The absolute value of a correlation coefficient indicates the of the relationship and the sign indicates the of the__ relationship.

When calculating a correlation coefficient,_____________ can only be used when the data are related in a linear fashion.

A raw score above the mean of the distribution will result in a z score

A sample consists of n = 25 scores. How many of the scores are used to calculate the range?

Introduction to Scientific Research

Research Approaches and Methods of Data Collection

Problem Identification and Hypothesis Formation

Ethics

Measuring Variables and Sampling

Research Validity

Control Techniques in Experimental Research

Experimental Research Design

Procedure for Conducting an Experiment

Quasi-Experimental Designs

Single-Case Research Designs

Survey Research

Qualitative and Mixed Methods Research

Inferential Statistics

Preparing the Research Report for Presentation or Publication

Filters

Exam 14: Descriptive Statistics

For a data set with a mean = 10 and standard deviation = 2, what is the z score corresponding to a raw score of 7?

The mean, median, and mode are all considered to be measures of

Use the following frequency distribution to answer questions -Which of the following is the lowest score in the frequency distribution?

A z score of 1.00 is located:

Use the following frequency distribution to answer questions -Which of the following ACT scores is the mode for the data shown in the frequency distribution?

To display the relationship between two quantitative variables, one should use

In a histogram, frequencies are presented on the____ and the score variable is presented on the _____.

How does multiple regression differ from simple regression?

________is the exact average deviation of data values from the mean in squared units, and _____________is the approximate average deviation of data values from the mean in regular units.

Use the following frequency distribution to answer questions -What is the most frequently occurring score in the frequency distribution?

What is Σ X for the following group of scores? 1, 2, 3, 4, 5

What position in a distribution of numbers corresponds to a z score of z = -2.00?

What kind of graph is used to display frequencies as bars without spaces between them?

A _________is a systematic arrangement of data values in which the unique data values are rank ordered and the frequencies are provided for each of these values.

If we were interested in predicting grade point average from the number of hours students spend on the internet what should we place on the vertical axis?

The absolute value of a correlation coefficient indicates the__________ of the relationship and the sign indicates the of the____________ relationship.

When calculating a correlation coefficient,_____________ can only be used when the data are related in a linear fashion.

A raw score above the mean of the distribution will result in a z score

A sample consists of n = 25 scores. How many of the scores are used to calculate the range?

Introduction to Scientific Research

Research Approaches and Methods of Data Collection

Problem Identification and Hypothesis Formation

Ethics

Measuring Variables and Sampling

Research Validity

Control Techniques in Experimental Research

Experimental Research Design

Procedure for Conducting an Experiment

Quasi-Experimental Designs

Single-Case Research Designs

Survey Research

Qualitative and Mixed Methods Research

Inferential Statistics

Preparing the Research Report for Presentation or Publication

Filters

In a histogram, frequencies are presented on the and the score variable is presented on the _.

is the exact average deviation of data values from the mean in squared units, and _____is the approximate average deviation of data values from the mean in regular units.

The absolute value of a correlation coefficient indicates the of the relationship and the sign indicates the of the__ relationship.