tests

Question 1

what is the chi squared test

Answer 1

to test if there is no significant difference between the observed and expected values of two numbers

Question 2

find out the expected values

Answer 2

find out the average of the two numbers , 63 dogs 37 cats, average is 50

Question 3

if difference is probably significant

Answer 3

null hypothesis is wrong

Question 4

if difference is probably not significant

Answer 4

null hypothesis is right

Question 5

equation

Answer 5

(observed value - expected value)squared divided by expected, add both answers after

Question 6

if chi squared results are lower than table

Answer 6

no significance, null hypothesis right

Question 7

if chi squared results are higher than table

Answer 7

significant, null hypothesis is wrong

Question 8

what is the null hypothesis

Answer 8

the question has no link e.g smoking has no link between the values on a smoking question

Question 9

critical for 1 degree

Answer 9

3.84