2. Answer the following questions:

a. A dependent variable is a variable that is manipulated by the experimenter

- true

- false

b. A ceiling effect may result in a negative skew

- true

- false

c. A line graph always depicts a linear relationship between variables

- true

- false

d. Validity refers to the reproducibility of an experiment

- true

- false

e. Your student identification number is an example of ordinal level data

- true

- false