The deviation IQ became necessary because a. standard ...

[oliviahorn72]

The deviation IQ became necessary because
 
  a. standard deviations for IQ's were the same across age groups.
  b. IQ's at one age level did not compare to IQ's at another age level in terms of percentiles.
  c. the IQ was difficult to calculate.
  d. the IQ was a cumbersome concept.

Question 2

If you have three clocks in your house, and every clock is 10 minutes fast, this is an example of
 
  a. systematic error.
  b. random error.
  c. measurement error.
  d. a rubber yardstick.

[sylvia]

Answer to Question 1

b

Answer to Question 2

a