Question 1

A scattergram is a graph on which a researcher plots each case or observation,
where each axis represents the value of one variable.It is used for variables
measured at the interval or ratio level,rarely for ordinal variables,and never if
either variable is nominal.

Accepted Answer

A scattergram is typically used for interval or ratio level variables, and not for nominal or ordinal variables.

Question 2

A curvilinear relationship means that a straight line can be visualized in the
middle of a maze of cases running from one corner to another.

Accepted Answer

A curvilinear relationship means that the relationship between two variables is not linear, but instead follows a curve or a nonlinear pattern. A straight line cannot be visualized in the middle of such a relationship.

Question 3

___________________ exist when variables appear together and are associated (they covary).

Accepted Answer

Covariation refers to the presence of a statistical relationship between two or more variables where they vary together. Bivariate statistics is a broader term that encompasses any statistical analysis that involves two variables, while statistical relationships may refer to any type of association or correlation between variables. Independence, on the other hand, implies the absence of any relationship or association between variables.

Question 4

________________ let a researcher consider two variables together and describe the relationship between variables.

Accepted Answer

The answer of ________________ let a researcher consider two variables...

Question 5

A linear relationship means that the center of a maze of cases would
form a U curve,right side up or upside down,or an S curve.

Accepted Answer

A linear relationship means that there is a constant rate of change between variables, resulting in a straight line when plotted on a graph. It does not form a U or S curve.

Question 6

____________________ means there is no association or no relationship between variables.

Accepted Answer

The answer of ____________________ means there is no association or...

Question 7

A _______________ expresses scores on a frequency distribution in terms of a number of standard deviations from the mean.

Accepted Answer

A z-score expresses scores on a frequency distribution in terms of a number of standard deviations from the mean. The other choices do not involve standard deviations. Percentiles express the percentage of scores that fall below a certain point, standard deviation measures the amount of variability in a dataset, and range measures the difference between the highest and lowest scores in a dataset.

Question 8

____________________ means that things go together or are associated.

Accepted Answer

The answer of ____________________ means that things go together or...

Question 9

_______________ is the most difficult to compute measure of dispersion;it is also the most comprehensive and widely used.

Accepted Answer

Standard deviation is the most difficult to compute measure of dispersion, as it involves calculating the square root of the sum of squared deviations from the mean for each data point. However, it is also the most comprehensive and widely used measure of dispersion because it takes into account all the data points and provides a reliable indication of the degree of variability in the data set. Percentiles and z-scores are measures of relative standing rather than dispersion, while the range only considers the difference between the maximum and minimum values and can be affected by outliers or extreme values in the data set.

Quiz 12: Analysis of Quantitative and Qualitative Data

A scattergram is a graph on which a researcher plots each case or observation, where each axis represents the value of one variable.It is used for variables measured at the interval or ratio level,rarely for ordinal variables,and never if either variable is nominal.

A curvilinear relationship means that a straight line can be visualized in the middle of a maze of cases running from one corner to another.

___________________ exist when variables appear together and are associated (they covary) .

________________ let a researcher consider two variables together and describe the relationship between variables.

A linear relationship means that the center of a maze of cases would form a U curve,right side up or upside down,or an S curve.

____________________ means there is no association or no relationship between variables.

A _______________ expresses scores on a frequency distribution in terms of a number of standard deviations from the mean.

____________________ means that things go together or are associated.

_______________ is the most difficult to compute measure of dispersion;it is also the most comprehensive and widely used.