Exam 3 Homework Questions Flashcards
(40 cards)
What is the assumption that the amount of variability in each of the two groups is equal?
Homogeneity of Variance
In order to compute the test statistic or t value, you must first approximate the sample size by calculating the _____________.
Degrees of Freedom
A researcher wants to compare create an intervention to improve the well being of first-semester graduate students, so she gives the professional school counseling students specific doses of rocky road ice cream, and the mental health counseling students specific doses of licorice. To analyze the differences in well being, she would use a(n) ______________________.
Independent Samples T-Test
If the number of participants in group one = 32 and the number in group two = 30, what is the associated degrees of freedom?
60
If you want to examine the difference between the average scores of three unrelated groups, which of the following statistical techniques should you select?
Analysis of Variance
If the obtained value is greater than the critical value, what should you do?
Reject the Null Hypothesis
If the number of participants in group one = 54 and the number in group two = 58, what is the associated degrees of freedom?
110
What is considered to be a small effect for Cohen’s d?
0.17
In order to determine whether or not you will reject the null hypothesis, the test statistic must be compared against the ___________.
Critical Value
The t statistic value is also called the _____________.
Obtained Value
Which major assumption of the t test deals with the amount of variability in each group?
Variances are equal
Imagine you are looking up a critical t value in a t table. If your observed t value for the degrees of freedom lies between two critical values in the table, to be conservative you would select __________________________.
The smaller value
A measure of how different two groups are from one another in their magnitude is the __________.
Effect Size
The t test for independent means is used when each group is tested ____________.
Only Once
What does the number 58 represent in the following: t(58) = 2.001, p < .05?
Degrees of Freedom
If your obtained t value is 7.14 and the critical value is 6.10, what decision should you make?
Reject the Null Hypothesis
The t test for independent means is used when you are looking at the difference in average scores of one or more variables between _______ groups that are ____________ of one another.
two, independent
In the t test for independent samples, the actual statistical test is__________________.
Nondirectional
When computing effect size, the sample size is ________.
Not taken into account
That same researcher had a third group of students—those studying College Student Affairs—who the faculty thought ought to be tested in the next study. The researcher decided to give the first-semester College Student Affairs graduate students specific doses of chewy fruit-flavored candies for their treatments. Now what test statistic would she need to use to evaluate the difference in effectiveness between the groups?
Analysis of Variance
What is used to examine the degree of the relationship between variables?
Pearson Correlation
If you are running a t-test for dependent means on a group of 54 individuals, your degrees of freedom will be:
53
In the following, what are the degrees of freedom: t(29) = 2.001, p < .05?
29
When using a t-test for dependent means, what is true of the sample?
They are the same group
