Week 5 - Association

Question 1

Practical Significance or … Size

Answer 1

Effect Size

Question 2

Statistical Inference is making…

Answer 2

Making conclusions abt population using sample

Question 3

Sampling error is ..

Answer 3

Diff between sample estimate and true value of population

Question 4

2 ways to make population inferences

Answer 4

Estimates (Point/Interval) and Hypothesis testing (p-value)

Question 5

5 steps for hypothesis testing

Answer 5

Null, Alternate, Alpha, SuitableTest, Interpret

Question 6

2 hypothesis

Answer 6

Null, Alternate

Question 7

Null hypothesis is difference or no difference ?

Answer 7

No Difference, No association or No correlation

Question 8

P-value stands for

Answer 8

Probability value

Question 9

P-value is

Answer 9

Probability of observed results being due to ‘Chance’ alone

Question 10

P-value cutoff

Answer 10

0.05 (5%)

Question 11

Correlation is for … variables

Answer 11

Continuous

Question 12

Association is for … variables

Answer 12

Categorical

Question 13

SPSS call Continuous variable …

Answer 13

Scale

Question 14

2 variables type in correlation/association

Answer 14

Independent and Dependent

Question 15

X-variable is also called …

Answer 15

Exposure, Independent var, explanatory var

Question 16

Y-variable is also called ..

Answer 16

Outcome, dependent var

Question 17

Descriptive stats for categorical data uses .. charts

Answer 17

Bar charts, Pie charts, frequency/count

Question 18

Cross-tabulation is also known as

Answer 18

Frequency table, Contingency table

Question 19

What to compare in cross-tabulation

Answer 19

observed vs expected frequency/percentage

Question 20

Ho is … association

Answer 20

no association

Question 21

H1 is … association

Answer 21

there is an association

Question 22

What test to use for association

Answer 22

Chi-Square test of contingencies

Question 23

Non-parametric test does not require data to have … distribution

Answer 23

does not require data to have normal distribution

Question 24

Steps of chi-square test

Answer 24

Hypothesis, 
select sample, 
collect data, 
test statistic, 
do chi-square test, 
p-value, 
evaluate against null hypothesis