The group which received the placebo is called a. the ...

[kwoodring]

The group which received the placebo is called
 
  a. the experimental group
  b. the control group
  c. the matched group
  d. the model group

Question 2

Standard deviation and variance are based on the logic of
 
  a. an average deviation value.
  b. a median deviation value.
  c. the sum of deviation values.
  d. a large amount of variability in the sample.

[alexisweber49]

Answer to Question 1

b

Answer to Question 2

a

[kwoodring]

Thanks for the timely response, appreciate it

[bassamabas]

Wow, this really help