In order to select a stratified random sample, a researcher would ...

[c0205847]

In order to select a stratified random sample, a researcher would have to know_____.
 
  a. the characteristics of individuals in the population and the relative frequency of those characteristics
  b. the names of all the people in the population
  c. the phone numbers of the people in the population
  d. all of these

Question 2

In order to estimate the height of all students at your university, let's assume you have measured the height of all psychology majors at the university. If you had measured the height scores of all students at your university, these scores would constitute a _________.
 
  a. population c. parameter
  b. sample d. statistic

[komodo7]

Answer to Question 1

A
Strata are defined as characteristics of the members of a population. They exist in various proportions and the researcher would have to know the strata and their relative proportions in the population in order to sample individuals using stratified random sampling from the population.

Answer to Question 2

A

[c0205847]

TYSM

[xiazhe]

Wow, this really help