The _______________ is built on the principle of combining test ...

[big1devin]

The _______________ is built on the principle of combining test units into blocks based on an external criteria variable that might impact the results of the study.
 a. completely randomized design c. Latin square design
  b. randomized block design d. factorial design

Question 2

If the price of a product ranges from 59 to 179, the range of these prices is _____
 a. 238
  b. 60
  c. 120
  d. 179

[ultraflyy23]

Answer to Question 1

B
If one or more extraneous variables is assumed not to be constant, then a randomized block design (RBD) can be used to create blocks based on the extraneous variable of concern.

Answer to Question 2

C

[big1devin]

TYSM

[daiying98]

Thanks for the timely response, appreciate it