Question 1

Which is NOT a measure of central tendency?
A)mean
B)mode
C)range
D)median

Accepted Answer

Range is not a measure of central tendency. It is a measure of dispersion, i.e. the difference between the highest and lowest values in a dataset. The measures of central tendency are mean, median and mode.

Question 2

Abscissa is to ordinate as
A)vertical axis is to horizontal axis.
B)horizontal axis is to vertical axis.
C)measure of central tendency is to frequency distribution.
D)frequency distribution is to measure of central tendency.

Accepted Answer

Abscissa refers to the horizontal axis in a coordinate system, while ordinate refers to the vertical axis. Therefore, the relationship between abscissa and ordinate can be compared to that of horizontal axis and vertical axis. Choice B correctly expresses this relationship.

Question 3

A single number that describes a "middle score" is a(n)
A)inferential statistic.
B)frequency distribution.
C)z-score.
D)measure of central tendency.

Accepted Answer

A measure of central tendency is a statistical measure that identifies a single score or value that represents the center of a distribution of scores. Examples of measures of central tendency include the mean, median, and mode.

Question 4

Which of the following is a graph of a frequency distribution in which the number of scores falling in each class is represented by points on a line?
A)scatter matrix
B)histogram
C)frequency polygon
D)correlation matrix

Accepted Answer

A frequency polygon is a graph of a frequency distribution in which points are plotted on a line to represent the number of scores falling in each class. A scatter matrix displays the relationship between multiple variables through a matrix of scatterplots. A histogram is a bar graph that displays the frequency distribution of a set of continuous data. A correlation matrix shows the correlation coefficients between multiple variables.

Question 5

Histograms and frequency polygons are visual representations of
A)frequency distributions.
B)nominal scales.
C)inferential statistics.
D)differential statistics.

Accepted Answer

Histograms and frequency polygons are used to display the distribution of a variable, making them useful visual representations of frequency distributions. They show the frequency or proportion of observations that fall within each interval or bin.

Question 6

Kayla wants to create an organized summary of the number of people interested in each of the fifteen new products her company has designed.She should construct a
A)frequency distribution.
B)range table.
C)variability matrix.
D)standard deviation scale.

Accepted Answer

A frequency distribution is the best choice for organizing the number of people interested in each of the fifteen new products because it allows for a clear overview of the distribution of responses and can help identify any patterns or trends in the data.

Question 7

Carol is drawing a graph of a frequency distribution in which she places the number of scores falling in each class as points on a line.Carol is graphing a
A)scatter matrix.
B)frequency polygon.
C)histogram.
D)correlation matrix.

Accepted Answer

A frequency polygon is a graph that represents a frequency distribution by plotting the midpoint of each class interval on the x-axis and the frequency of the class on the y-axis, then connecting the points with straight lines. This is consistent with Carol's description of her drawing, placing the number of scores falling in each class as points on a line.

Question 8

On a graph,the horizontal line or the X axis is called the
A)abscissa.
B)ordinate.
C)standard deviation.
D)central tendency.

Accepted Answer

The horizontal line or X axis is used to measure the independent variable or input data in a graph. The term used for this line is abscissa.

Question 9

The mean,median,and mode are
A)inferential statistics.
B)measures of central tendency.
C)measures of variability.
D)graphical statistics.

Accepted Answer

The mean, median, and mode are all measures of central tendency, as they help to summarize and describe the typical or central value of a data set. They are not inferential statistics, which involve using sample data to make inferences about a larger population, nor are they measures of variability or graphical statistics, which describe the spread or distribution of data.

Question 10

Measures of central tendency
A)present numbers in a pictorial format.
B)describe a "typical" score in a distribution.
C)allow one to generalize from small samples.
D)indicate how scores differ from each other.

Accepted Answer

Measures of central tendency, such as mean, median, and mode, are used to describe a "typical" score in a distribution. They do not necessarily allow one to generalize from small samples or indicate how scores differ from each other. And while they can be presented in a pictorial format, this is not their primary purpose.

Question 11

A number that describes a "typical score" around which other scores fall is called a measure of
A)variability.
B)central tendency.
C)normality.
D)cohesion.

Accepted Answer

A measure of central tendency refers to a number that represents the center or midpoint of a data set. This can include the mean, median, or mode, and is often used to describe a "typical" or representative score within the data. Measures of variability, on the other hand, describe how spread out or dispersed the scores are within the data set. Normality refers to how closely the distribution of scores resembles a normal or bell-shaped curve, while cohesion is not a statistical term.

Question 12

The propensity for a majority of scores to fall in the midrange of possible values is referred to as
A)central tendency.
B)inferential probability.
C)the causal correlational effect.
D)frequency distribution.

Accepted Answer

Central tendency refers to the tendency of scores to cluster around the middle of the range of possible values, which is typically the mean, median, or mode of a distribution.

Question 13

Measures of central tendency include the mean,median,and
A)range.
B)module.
C)mode.
D)standard deviation.

Accepted Answer

The measures of central tendency are used to describe where the majority of the data falls on a distribution. The mean is the average of all the data points, the median is the middle value when the data is put in numerical order, and the mode is the value that occurs most frequently in the data set. The range and standard deviation are measures of variability, not central tendency. Therefore, the best choice is C, mode.

Question 14

A bar graph is to a histogram as dots connected by straight lines are to a
A)diorama.
B)frequency polygon.
C)pictograph.
D)scatterplot.

Accepted Answer

A histogram is like a bar graph but with bars touching each other to show continuous data. A frequency polygon is like connected dots on a line graph, but with lines going up to show frequency or count rather than specific values.

Question 15

On a graph,the vertical line or Y axis is called
A)abscissa.
B)ordinate.
C)standard deviation.
D)central tendency.

Accepted Answer

The vertical line on a graph is called the ordinate, while the horizontal line is called the abscissa. Standard deviation and central tendency are statistical concepts that are not applicable in this context.

Question 16

Dr.Sandford indicates the frequencies of his data using vertical bars.Dr.Sandford is constructing a
A)frequency polygon.
B)scatter diagram.
C)normal distribution.
D)histogram.

Accepted Answer

Dr.Sandford indicates the frequencies of his data using vertical bars, which is a characteristic feature of constructing a histogram.

Question 17

Dots connected by straight lines are to a frequency polygon as a bar graph is to a
A)diorama.
B)pictograph.
C)histogram.
D)scatterplot.

Accepted Answer

Both dots and bars in a frequency polygon and a bar graph respectively represent the frequency of data in different categories. However, while a frequency polygon connects the dots with straight lines, a bar graph uses bars of equal width to represent the data. Therefore, the most appropriate analogy for a bar graph would be a histogram, where bars of equal width are used to represent the frequency of data in defined intervals.

Question 18

A histogram can be described as a type of
A)bar graph.
B)polygon.
C)frequency mode.
D)class interval.

Accepted Answer

A histogram is a type of bar graph that displays the distribution of a continuous variable by dividing the data into intervals or bins and plotting each interval's frequency or relative frequency as a bar.

Question 19

Kip is sorting scores into four classes of equal size,which she then puts in order.Kip is creating a
A)scatter diagram.
B)correlation.
C)frequency distribution.
D)variability plot.

Accepted Answer

Kip is creating a frequency distribution by sorting the scores into four classes of equal size and then arranging them in order.

Question 20

Which of the following is made by labeling class intervals on the abscissa,frequencies on the ordinate,and then drawing bars for each class interval with the height of each bar being determined by the number of scores in each class?
A)scatter diagram
B)histogram
C)frequency polygon
D)normal curve

Accepted Answer

This description matches the definition of a histogram, where class intervals are labeled on the x-axis, frequencies on the y-axis, and bars (rectangles) are drawn for each interval with the height determined by the frequency of scores in that interval. A scatter diagram shows the relationship between two variables, a frequency polygon connects points on a graph to show the frequency distribution of a variable, and a normal curve is a symmetrical bell-shaped curve representing a continuous probability distribution.

Quiz 81: Understanding Descriptive and Inferential Statistics for Psychological Research

Which is NOT a measure of central tendency?

Abscissa is to ordinate as

A single number that describes a "middle score" is a(n)

Which of the following is a graph of a frequency distribution in which the number of scores falling in each class is represented by points on a line?

Histograms and frequency polygons are visual representations of

Kayla wants to create an organized summary of the number of people interested in each of the fifteen new products her company has designed.She should construct a

Carol is drawing a graph of a frequency distribution in which she places the number of scores falling in each class as points on a line.Carol is graphing a

On a graph,the horizontal line or the X axis is called the

The mean,median,and mode are

Measures of central tendency

A number that describes a "typical score" around which other scores fall is called a measure of

The propensity for a majority of scores to fall in the midrange of possible values is referred to as

Measures of central tendency include the mean,median,and

A bar graph is to a histogram as dots connected by straight lines are to a

On a graph,the vertical line or Y axis is called

Dr.Sandford indicates the frequencies of his data using vertical bars.Dr.Sandford is constructing a

Dots connected by straight lines are to a frequency polygon as a bar graph is to a

A histogram can be described as a type of

Kip is sorting scores into four classes of equal size,which she then puts in order.Kip is creating a

Which of the following is made by labeling class intervals on the abscissa,frequencies on the ordinate,and then drawing bars for each class interval with the height of each bar being determined by the number of scores in each class?