A psychologist would like to examine the effects of different testing methods on the final performance of college students. One group has regular quizzes, one group has three large exams, and the third group only has a final exam. At the end of the course, the psychologist interviews each student to get a measure of the student's overall knowledge of the material. quizes exams final only 4 1 0 6 4 2 3 5 0 7 2 2 G=36 Ex2=164 Compute Tukey's HSD to determine exactly which methods are significantly different. q = Round to 2 decimal places, Tukey's HSD= Which methods are significantly different? a. Quizzes vs. Exams b. Quizzes vs. Final Only c. Exams vs. Final Only d. All three are different Enter letter only from the choices above:
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
Question 16 options:
| quizes | exams | final only |
| 4 | 1 | 0 |
| 6 | 4 | 2 |
| 3 | 5 | 0 |
| 7 | 2 | 2 |
G=36
Ex2=164
Compute Tukey's HSD to determine exactly which methods are significantly different.
q =
Round to 2 decimal places, Tukey's HSD=
Which methods are significantly different?
a. Quizzes vs. Exams
b. Quizzes vs. Final Only
c. Exams vs. Final Only
d. All three are different
Enter letter only from the choices above:
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