When might you need a larger sample to represent the population? ...

[ARLKQ]

When might you need a larger sample to represent the population?
 
  a) the amount of variability within groups is small
  b) the difference between the two groups is small
  c) the difference between the two groups is great
  d) both a and c

Question 2

A researcher interested in assessing marital satisfaction mailed surveys to 1,000 participants including various age groups and ethnicities. If the individuals are only surveyed one time this would represent a _________ design.
 
  a. cross-sectional
  b. panel
  c. longitudinal
  d. successive independent samples

[raenoj]

Answer to Question 1

b

Answer to Question 2

A

[ARLKQ]

Excellent

[bbburns21]

Thanks for the timely response, appreciate it