Question 1

Matching
-Categorical data

Accepted Answer

A)  Sample 
B)  Population 
C)  Interest in math 
D)  Teaching methods 
A)  Sample 
B)  Population 
C)  Interest in math 
D)  Teaching methods

Question 2

A high correlation coefficient would be obtained from a scatterplot whose points:

Accepted Answer

A)  can be described as encompassing a square 
B)  cluster around a horizontal line 
C)  cluster around a vertical line 
D)  cluster around a line drawn from upper left to lower right 
A)  can be described as encompassing a square 
B)  cluster around a horizontal line 
C)  cluster around a vertical line 
D)  cluster around a line drawn from upper left to lower right

Question 3

In a normal distribution, ± 1 z-score includes about:

Accepted Answer

A)  30% of the scores 
B)  50% of the scores 
C)  70% of the scores 
D)  90% of the scores 
A)  30% of the scores 
B)  50% of the scores 
C)  70% of the scores 
D)  90% of the scores

Question 4

A relationship is shown in a crossbreak table by:

Accepted Answer

A)  the size of expected frequencies 
B)  the number of categories on each variable 
C)  a large discrepancy between actual and expected frequencies 
D)  an increase in actual frequencies from lower left to upper right 
A)  the size of expected frequencies 
B)  the number of categories on each variable 
C)  a large discrepancy between actual and expected frequencies 
D)  an increase in actual frequencies from lower left to upper right

Question 5

Whether a particular correlation coefficient is "good depends on:

Accepted Answer

A)  the situation to which it is applied 
B)  whether it exceeds .80 
C)  whether the sample to which it applies was randomly selected 
D)  the average on each variable to which it applies 
A)  the situation to which it is applied 
B)  whether it exceeds .80 
C)  whether the sample to which it applies was randomly selected 
D)  the average on each variable to which it applies

Question 6

If there are only a few very high scores and a large number of closely bunched low scores in a distribution:

Accepted Answer

A)  the mean will be higher than the median 
B)  the median will be higher than the mean 
C)  the median and the mean will be the same 
D)  none of the above is correct 
A)  the mean will be higher than the median 
B)  the median will be higher than the mean 
C)  the median and the mean will be the same 
D)  none of the above is correct

Question 7

Matching
-Statistics

Accepted Answer

A)  Sample 
B)  Population 
C)  Interest in math 
D)  Teaching methods 
A)  Sample 
B)  Population 
C)  Interest in math 
D)  Teaching methods

Question 8

Which of the following statements is correct?

Accepted Answer

A)  The mean is a point in a distribution below and above which 50% of the cases lie. 
B)  The mode is the least-used measure of central tendency. 
C)  The median is equal to the sum of the scores divided by the number of scores. 
D)  The median is the same value as the 25th percentile. 
A)  The mean is a point in a distribution below and above which 50% of the cases lie. 
B)  The mode is the least-used measure of central tendency. 
C)  The median is equal to the sum of the scores divided by the number of scores. 
D)  The median is the same value as the 25th percentile.

Question 9

Crossbreak tables are used when:

Accepted Answer

A)  both variables are categorical 
B)  both variables are quantitative 
C)  one variable is categorical, the other is quantitative 
D)  all of the above 
A)  both variables are categorical 
B)  both variables are quantitative 
C)  one variable is categorical, the other is quantitative 
D)  all of the above

Question 10

In constructing a scatterplot:

Accepted Answer

A)  the range of scores must be the same on each axis 
B)  each individual is plotted once 
C)  the X axis must be the dependent variable 
D)  the number of cases must be at least 50 
A)  the range of scores must be the same on each axis 
B)  each individual is plotted once 
C)  the X axis must be the dependent variable 
D)  the number of cases must be at least 50

Question 11

Which one of these correlation coefficients has the least predictive value?

Accepted Answer

A)  .87 
B)  53 
C) 19 
D)  -28 
A)  .87 
B)  53 
C) 19 
D)  -28

Question 12

The kind of graph on which one would determine the frequency of a given score by noting the height of the line is called a(n):

Accepted Answer

A)  histogram 
B)  abscissa 
C)  frequency polygon 
D)  frequency table 
A)  histogram 
B)  abscissa 
C)  frequency polygon 
D)  frequency table

Question 13

Scatterplots are another way of showing the information given in:

Accepted Answer

A)  means 
B)  standard deviations 
C)  correlation coefficients 
D)  crossbreak tables 
A)  means 
B)  standard deviations 
C)  correlation coefficients 
D)  crossbreak tables

Question 14

A correspondence exists between z-scores and percentile ranks if:

Accepted Answer

A)  the calculations are done correctly 
B)  the mean equals the median 
C)  the scores are valid 
D)  the data approximate the normal distribution 
A)  the calculations are done correctly 
B)  the mean equals the median 
C)  the scores are valid 
D)  the data approximate the normal distribution

Matching -Categorical data

A high correlation coefficient would be obtained from a scatterplot whose points:

In a normal distribution, ± 1 z-score includes about:

A relationship is shown in a crossbreak table by:

Whether a particular correlation coefficient is "good depends on:

If there are only a few very high scores and a large number of closely bunched low scores in a distribution:

Matching -Statistics

Which of the following statements is correct?

Crossbreak tables are used when:

In constructing a scatterplot:

Which one of these correlation coefficients has the least predictive value?

The kind of graph on which one would determine the frequency of a given score by noting the height of the line is called a(n):

Scatterplots are another way of showing the information given in:

A correspondence exists between z-scores and percentile ranks if:

The Nature of Research

The Research Problem

Locating and Reviewing the Literature

Ethics and Research

Variables and Hypotheses

Sampling

Instrumentation

Validity and Reliability

Internal Validity

Inferential Statistics

Statistics in Perspective

Experimental Research

Single-Subject Research

Correlational Research

Causal-Comparative Research

Survey Research

The Nature of Qualitative Research

Observation and Interviewing

Content Analysis

Ethnographic Research

Historical Research

Mixed-Methods Research

Action Research

Preparing Research Proposals and Reports

Filters

Exam 10: Descriptive Statistics

Matching -Categorical data

A high correlation coefficient would be obtained from a scatterplot whose points:

In a normal distribution, ± 1 z-score includes about:

A relationship is shown in a crossbreak table by:

Whether a particular correlation coefficient is "good depends on:

If there are only a few very high scores and a large number of closely bunched low scores in a distribution:

Matching -Statistics

Which of the following statements is correct?

Crossbreak tables are used when:

In constructing a scatterplot:

Which one of these correlation coefficients has the least predictive value?

The kind of graph on which one would determine the frequency of a given score by noting the height of the line is called a(n):

Scatterplots are another way of showing the information given in:

A correspondence exists between z-scores and percentile ranks if:

The Nature of Research

The Research Problem

Locating and Reviewing the Literature

Ethics and Research

Variables and Hypotheses

Sampling

Instrumentation

Validity and Reliability

Internal Validity

Inferential Statistics

Statistics in Perspective

Experimental Research

Single-Subject Research

Correlational Research

Causal-Comparative Research

Survey Research

The Nature of Qualitative Research

Observation and Interviewing

Content Analysis

Ethnographic Research

Historical Research

Mixed-Methods Research

Action Research

Preparing Research Proposals and Reports

Filters