Question 1

________ of ________ is the appropriate test to use when comparing the means of three or more groups to see if they are significantly different from each other.

Accepted Answer

The answer of ________ of ________ is the appropriate test...

Question 2

When conducting an independent samples t-test in SPSS, the metric variable is set as the ____ variable and the nonmetric variable as the ________ variable.

Accepted Answer

The answer of When conducting an independent samples t-test in...

Question 3

In an analysis of variance, squaring the deviation of each score from its group mean and summing these scores computes the:

Accepted Answer

Squaring the deviation of each score from its group mean and summing these scores computes the within-group sum of squares. The between-group sum of squares is computed by summing the squared deviation of each group mean from the overall mean, weighted by the sample size of each group. The total sum of squares is the sum of both the within-group and between-group sum of squares. The mean square within groups is computed by dividing the within-group sum of squares by the degrees of freedom within groups.

Question 4

A researcher wishes to compare the average number of product sales between stores in Melbourne, Sydney and Brisbane. To examine this, an appropriate statistical test would be a(n):

Accepted Answer

A one-way ANOVA is appropriate for comparing the means of more than two independent groups, which is the case here with the three different cities. The paired samples t-test is used when comparing the means of two related groups (e.g. before and after a treatment), while the independent samples t-test is used when comparing the means of two independent groups. The n-way ANOVA is used when there are multiple independent variables being studied.

Question 5

In an analysis of variance, summing the within-group variance and the between-group variance computes the _____ ________.

Accepted Answer

The answer of In an analysis of variance, summing the...

Question 6

If an ANOVA test between the means of three groups yields a value of 55 for MSbetween and a value of 20 for MSwithin , then the F-ratio is approximately:

Accepted Answer

The F-ratio is calculated by dividing the mean square between groups (MS_between = 55) by the mean square within groups (MS_within = 20), which gives 55 / 20 = 2.75.

Question 7

The independent samples t-test is used to compare the means of two ___________ groups (for example, gender attitudes towards an advertisement) to see if they are significantly different from one another.

Accepted Answer

The answer of The independent samples t-test is used to...

Question 8

In situations where the data is nonmetric and not normally distributed, _____________ techniques can be used.

Accepted Answer

The answer of In situations where the data is nonmetric...

Question 9

A procedure used to determine whether there is more variability in the scores of one sample than in the scores of another is called the ______.

Accepted Answer

The answer of A procedure used to determine whether there...

Question 10

The formula for the _______ is MSbetween / MSwithin.

Accepted Answer

The answer of The formula for the _______ is MSbetween...

Question 11

An investigation of a hypothesis to determine if two or more groups differ with respect to measures on a variable is known as a ____ of ___________.

Accepted Answer

The answer of An investigation of a hypothesis to determine...

Question 12

A new range of Fat Yak Ale is test marketed in three different pubs. One pub sells the ale at $9.00, the second pub sells it at $8.50 and the third pub sells it at $8.00. The researcher would like to test the extent to which sales differ between each of these price points. To examine this, an appropriate statistical test would be a(n):

Accepted Answer

A one-way ANOVA would be appropriate in comparing the sales between the three different price points of the same product in different pubs. An n-way ANOVA would be used if there were multiple variables that were being manipulated and tested together. Regression analysis would be used to examine the relationship between one dependent variable and one or more independent variables, but it is not applicable to this scenario. Cluster analysis is a method used to classify objects into groups based on similarity, which is not relevant for this research question.

Question 13

The paired samples t-test is used to compare the means of two _______ groups (for example, sales performance before and after a training program) to see if they are significantly different from one another.

Accepted Answer

The answer of The paired samples t-test is used to...

Question 14

When conducting an independent samples t-test in SPSS, ________ test for equality of variances is consulted to determine if the variances of the two samples are equal.

Accepted Answer

The answer of When conducting an independent samples t-test in...

Question 15

A paired samples t-test requires that the test variable(s) be measured on a ______ scale and from a ______ sample.

Accepted Answer

A paired samples t-test requires the test variable(s) to be measured on a metric (interval or ratio) scale and from a paired sample, which means that each participant in one group is matched with a participant in the other group based on some characteristic or condition (e.g. pre-test/post-test). Therefore, choice C is the best answer.

Question 16

Nonparametric tests have each of the following advantages over parametric tests, except:

Accepted Answer

Nonparametric tests are often preferred over parametric tests when sample sizes are small because they do not rely on assumptions about the underlying population distribution, which can be unreliable with small samples. Therefore, option D is incorrect. Nonparametric tests may require more computations in some cases, so option C is incorrect. Option A correctly states the advantage of nonparametric tests, as they avoid assumptions about population normality. Option B correctly states another advantage, as nominal and ordinal data may be easier to collect than continuous data.

Question 17

A retailer would like to test the hypothesis that female consumers are more likely to buy products when they visit their physical stores than their online stores. To examine this hypothesis, an appropriate statistical test would be a(n):

Accepted Answer

The answer of A retailer would like to test the...

Question 18

When conducting a(n) ___________ _______ t-test in SPSS, the t-test for equality of means is consulted to determine if there is any significant difference between the group means.

Accepted Answer

The answer of When conducting a(n) ___________ _______ t-test in...

Question 19

Red Cross Blood Service hypothesise that men make, on average, a higher number of donor visits per year than women. To examine this hypothesis, an appropriate statistical test would be a(n):

Accepted Answer

The hypothesis is comparing the means of a single variable (number of donor visits) between two groups (men and women). The appropriate statistical test for this scenario is the independent samples t-test. The paired samples t-test is used when the comparison is before and after measurements of the same variable on the same individuals. The chi-square test is used for comparing categorical variables, and the one-way ANOVA is used when comparing more than two groups.

Question 20

In an analysis of variance, variation of scores ______ groups is due to individual differences, and systematic variation of scores _______ groups is due to manipulation of the independent variable or characteristics of the independent variable.

Accepted Answer

The answer of In an analysis of variance, variation of...

Quiz 13: Bivariate Statistical Analysis: Tests of Differences

of is the appropriate test to use when comparing the means of three or more groups to see if they are significantly different from each other.

When conducting an independent samples t-test in SPSS, the metric variable is set as the variable and the nonmetric variable as the ____ variable.

In an analysis of variance, squaring the deviation of each score from its group mean and summing these scores computes the:

A researcher wishes to compare the average number of product sales between stores in Melbourne, Sydney and Brisbane. To examine this, an appropriate statistical test would be a(n) :

In an analysis of variance, summing the within-group variance and the between-group variance computes the _ ____.

If an ANOVA test between the means of three groups yields a value of 55 for MSbetween and a value of 20 for MSwithin , then the F-ratio is approximately:

The independent samples t-test is used to compare the means of two ___________ groups (for example, gender attitudes towards an advertisement) to see if they are significantly different from one another.

In situations where the data is nonmetric and not normally distributed, _____________ techniques can be used.

A procedure used to determine whether there is more variability in the scores of one sample than in the scores of another is called the ______.

The formula for the _______ is MSbetween / MSwithin.

An investigation of a hypothesis to determine if two or more groups differ with respect to measures on a variable is known as a of _______.

The paired samples t-test is used to compare the means of two _______ groups (for example, sales performance before and after a training program) to see if they are significantly different from one another.

When conducting an independent samples t-test in SPSS, ________ test for equality of variances is consulted to determine if the variances of the two samples are equal.

A paired samples t-test requires that the test variable(s) be measured on a scale and from a sample.

Nonparametric tests have each of the following advantages over parametric tests, except:

A retailer would like to test the hypothesis that female consumers are more likely to buy products when they visit their physical stores than their online stores. To examine this hypothesis, an appropriate statistical test would be a(n) :

When conducting a(n) _____ _ t-test in SPSS, the t-test for equality of means is consulted to determine if there is any significant difference between the group means.

Red Cross Blood Service hypothesise that men make, on average, a higher number of donor visits per year than women. To examine this hypothesis, an appropriate statistical test would be a(n) :

In an analysis of variance, variation of scores groups is due to individual differences, and systematic variation of scores _ groups is due to manipulation of the independent variable or characteristics of the independent variable.