Refer to Exhibit 10-1. The independent variable in this study is ...

[xroflmao]

Refer to Exhibit 10-1. The independent variable in this study is
 
  a. reading scores.
  c. gender.
  b. vocabulary instruction.
  d. the size of the sample.

Question 2

Refer to Exhibit 10-1. The Hawthorne effect would be most likely to increase the scores of
 
  a. all the students.
  b. the best students.
  c. the poorest students.
  d. the students with vocabulary instruction.
  e. the students without vocabulary instruction.

[al]

Answer to Question 1

B

Answer to Question 2

D