Inferential Statistics

Question 1

How do u calculate percentile for the percentage of scores that fall ABOVE a z score

Answer 1

Subtract the percentage from 100

Question 2

How do u calculate the percentile for a percentage of scores that fall BELOW a z score

Answer 2

Percentile is the same as the percentage

Question 3

When finding the percentage of scores between two Z scores that are on different sides of the mean do u add them or subtract them from each other

Answer 3

Add

Question 4

When finding the percentage of scores between two Z scores that are on the same side of the mean do u add them or subtract them from each other

Answer 4

Subtract

Question 5

How do u calculate the z score BELOW which a given percentage of scores fall

Answer 5

(>50%)
It will be positive. Look at %mean and look for the remaining percentage

(<50%)
It will be negative. Look at %tail and look for the given percentage REMEMBER TO PUT THE NEGATIVE SIGN!!!

Question 6

How do u calculate the z score ABOVE which a given percentage of scores fall

Answer 6

(<50%)
Will be positive. Look for percentage in tail column

(>50%)
Will be negative. Look for the percentage that is remaining from 50 REMEBER TO PUT THE NEGATIVE SIGN!!!!

Question 7

What is a percentile defined by

Answer 7

The percentage of scores BELOW it