Exam 6: Analyzing Data When You Are Comparing Two Groups

When you report statistical significance of the mean scores of the two groups and whether the difference is statistically significant or not, you will report the values of:

When you employ SPSS to test hypothesis, the default is:

For a study to have an impressive effect size, if the variance in scores is high, the magnitude of difference in mean scores between the two groups must be small.

The output for the independent samples t Test has two lines of data and the choice of line for interpretation is determined by the:

The output from the SPSS analysis provides you with the effect size.

With the independent samples t Test, the effect size is:

When you analyze evaluative data and you need to establish if there is statistical significance in the mean difference between two groups, the statistic you employ will be determined by:

Under what conditions would you employ the Fisher exact probability test?

In comparing the scores of two groups, using independent t Test in Excel, you will enter the gain scores of each of your two groups and you will not enter either the pretest or posttest scores.

When the difference in gain scores may be identical in two studies, the effect size is bound to be identical.

An evaluative researcher is studying the impact of mindfulness training in increasing emotional intelligence, using a comparison group design and noticed that his/her study has a higher mean gain of emotional intelligence between the treatment group and the comparison group than another study that too was studying the impact of increasing emotional intelligence using a comparison group design, while using a different scale to measure emotional intelligence. What is necessary to make a meaningful comparison of your study with the other study's findings, particularly in estimating the practical significance of your study?

Practical significance is addressed by:

When you employ the chi square statistic for dichotomous data, you should report the table showing the data, the value of chi square, and the phi coefficient.

When you report the findings of your study, you will report:

SPSS has its default setting for one-tailed test and Excel allows you to do two-tailed test.