Question

a.What is a One-Way ANOVA?

b. What is the dependent variable?

c. What are the factor variables?

d. Design levels________ levels Store size ___________levels

e. To find out the differences in design, what tool would you use within SPSS?

f. When is Tukey appropriate to use? g. What is used for a small number of comparisons?

h. What does the ANOVA table exhibit?

i. What are linear trends?

j. Overall, why is ANOVA needed?

Answer 1

a) One way analysis of variance (ANOVA) is the feature in the SPSS which is used to check if there is a significant difference between the mean of two or more independent data sets. Eg: We can use it to see if an athlete's performance in the race was dependent on its anxiety level by categorising the athletes in 3 categories (high anxiety, medium anxiety, low anxiety).

b) Dependent variable or an outcome variable is that variable which is independent on any independent variable. In the above example the athlete's performance is the dependent variable.

c) Factor variables are the variiables that can store either a string or a numeric value. A categorical variable can be converted into a factor variable by using the factor function.