416,188 views
33 votes
33 votes
A survey is not valid if it select one:

a. is more than one year old.
b. lacks secondary evidence to supplement it.
c. does not include at least 50 responses.
d. fails to measure what it is intended to measure.

User Lyubomir Velchev
by
3.1k points

1 Answer

13 votes
13 votes
D. Fails to measure what it is intended to measure
User CLR
by
3.1k points