Threats/Measurement/Sampling

Range of motion is an example of a:

• ratio level variable

• interval level level

• nominal level variable

• ordinal variable

An ordinal level variable would be:

• MMT

• ROM

• Berg Balance scale (__/56)

• timed walk test

The type of sampling where you pick the 5th person

• stratified

• simple

• systematic

• snowball

One group receives a new exercise, the other receives standard care. Which one is the control?

• exercise

• standard care

• there is no control

On the dependent variable of interest, You want groups to be _______ at baseline and ____ at the end?

• similar; similar

• similar; different

• different; similar

• different; different

If you wanted to assure that you had an even number of smoker in your group, you could:

• use random sampling

• use purpose sampling

• use blocking variables

• use a random number generator

In a two-group study, one group decideds to work out extra even though they were only supposed to do 1 day of exercise a week. What threat is this?

• maturation

• regression

• attrition

• history

Type 2 error can be reduced by:

• increasing power

• increasing beta

• decreasing alpha

• decreasing power

Temporal sequencing is needed to prove

• statistical validity

• construct validity

• internal validity

• external validity

When two groups talk to each other and they shouldn't, this is called:

• social imitation

• social diffusion

• rivalry

• demoralization