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Flashcards in Review questions for test 2 Deck (31):
1

Two types of Criterion Validity?

Predictive and concurrent are two types of?

2

Of all the types, this type of validity is the only one that has subcategories?

Criterion validity is the only type to have?

3

Can a tool be reliable without being valid?

Yes

4

Can a tool be valid without being reliable

no

5

Measures what you're looking for is defined as sensitive or specific?

sensitive

6

quota sampling is similar to random sampling except?

in quota sampling you don't RANDOMLY select, you CONVENIENTLY select

7

difference between population and sample

population is the whole group and the sample is the part of the group that represents the population

8

difference between sampling bias and sampling error

sampling error results from the sampling bias

9

types of probability sampling

stratified, simple, cluster, systematic

10

two groups in a study, what's the minimum number you need in each group

30

11

Assurance that you are correct in rejecting the null hypothesis is called?

statistical power

12

three elements in determining the most appropriate sample size

alpha, effect size, desired power level

13

What is a sampling plan

How you're going to collect your people, your inclusion and exclusion criteria

14

what conditions must be met to use probability sampling

list of people, number them, random sampling

15

difference between simple random sampling and convenience sampling

Convenience sampling is getting people who are conveniently there, who are willing to participate. Random has a wider scope, and since it's random, there's less chance of bias

16

Choice between simple random sampling and convenience sampling, which one should you go with?

Simple, because it's unbiased

17

Rule of thumb for sample size?

30 per group

18

With statistical power, the greater the power the more...?

The more applicable the results

19

Name 5 pieces of information require for informed consent

Risk and benefits, alternative treatments (if there are any), what they're agreeing to do, the purpose of the study, consent

20

name 3 vulnerable groups

kids, elderly, pregnant

21

difference between highest and lowest number

range

22

greek symbols always mean we're talking about population....?

Population parameters

23

If P is less than Alpha....?

Reject the null hypothesis

24

what does the null hypothesis say?

there is no releationship

25

If p is less than alpha, and you reject the null hypothesis...then?

There is a relationship, therefore the treatment that was given had an impact

26

wide confidence interval = _____ confidence

less confidence

27

narrow confidence interval= ______confidence

more confidence

28

test comparing two groups, looking for differences in means

t-test

29

Looking for differences in means between more than two groups

ANOVA

30

Found in RCTs an other studies that focus on treatment outcomes or illness predictions

Biostatistics

31

The degree of the difference or lack of difference between the groups in the study

magnitude of effect