statistical testing

Question 1

why are statistical tests carried out?

Answer 1

to determine whether difference or correlation in data is significant or due to chance

Question 2

what is chi squared used for

Answer 2

compare observed and expected data

Question 3

what is students t test used for

Answer 3

compare means

Question 4

what is spearmans rank used for

Answer 4

to assess whether there is a significant relationship

Question 5

if the p value is less than or equal to 0.05

what does this means in terms of signifcance of data

Answer 5

if p value is less than or equal to 0.05 then the data is significant

this means there is a 0.05 or less probablity that data is due to chance to reject null hypothesis

Question 6

if the p value is more than or equal to 0.05

what does this means in terms of signifcance of data

Answer 6

the difference is not signifcant due to mpre than 0.05 proability that data is due to chance
so accept null hypothesis

Question 7

define null hypothesis

Answer 7

there will be no relationship/difference between the 2 conditions