Statistical testing/Inferential testing

Question 1

Significant result

Answer 1

Where there is a low probability that chance factors were responsible for the variables tested

Question 2

What do you do if the test is significant?

Answer 2

Reject the Null hypothesis and accept the alternative hypothesis

Question 3

What do you do if it is not significant?

Answer 3

Reject the alternative hypothesis and accept the Null hypothesis

Question 4

Difference between type 1 and type 2 errors

Answer 4

Type 1 = When the Null hypothesis is rejected when it should’ve been accepted. (Test was not significant)

Type 2 = When the null hypothesis is accepted when it should have been rejected. (Test was significant)

Question 5

What types of data is there in statistical testing

Answer 5

Nominal
Ordinal
Interval

Question 6

What is Nominal data ?

Answer 6

Tallies of discrete categories
In the shop there was 8 apples 10 Cakes and 15 Burgers

Question 7

What is ordinal data ?

Answer 7

Numbers are in an order
mood on a scale 1-10

Question 8

What is Interval data ?

Answer 8

Standardised units of measurement
Height in Cm
Times in seconds
Weights in Kg

Question 9

Inferential test table

Answer 9

Test of difference
Unrelated Related Test of correlation
Nominal Chi-squared Sign test Chi squared
Ordinal Mann Whitney Wilcoxon Spearman’s rho
Interval U t-test R t-test Pearson’s r