Trans - Hypothesis Testing and Sample Size Flashcards
1
Q
bias is measureable or nonmeasurable?
A
nonmeasurable
2
Q
random error is measurable or nonmeasurable?
A
measurable
3
Q
convenient sample is often a _______
A
bias sample
4
Q
relationship of sample size to random error
A
larger sample size, smaller random error
5
Q
considerations in sample
A
- is the sample representative of the population
- is the sample large enough
- are there other variables that explain the results
6
Q
independent variable
A
presumed cause
7
Q
dependent variable
A
outcome from the presumed cause
8
Q
extraneous variables
A
must be kept constant
9
Q
nominal scale
A
no order, only identifiers
10
Q
ordinal scale
A
some order exists
11
Q
scales of measurement
A
- nominal
- ordinal
- ratio
- interval
12
Q
process of testing a statement about the population against an alternative statement
A
hypothesis testing
13
Q
if p > a,
A
null hypothesis is not rejected
14
Q
if p < a,
A
null hypothesis is rejected
15
Q
two tailed hypothesis
A
null: mean is equal to X
alternative: mean is greater than or lesser than X
