PPT 5, 6, 7

Question 1

Normal distribution characteristics

Answer 1

mean = 0
standard deviation = 1

Question 2

Reason for z score

Answer 2

-locate each score
-compare scores

Question 3

z score formula

Answer 3

=X - u/o

Question 4

Z score

Answer 4

standard distribution
-positive - right of mean
-negative - left of mean

Question 5

Probability equation

Answer 5

chance that event occurs/total outcome

Question 6

Probability characteristic

Answer 6

-range from 0 to 1
-convert by multiplying by 100

Question 7

Sampling distribution

Answer 7

distribution of the sample means of all possible random samples

Question 8

Sampling distribution

Answer 8

-mean of the sample means will be close to population mean
-sample means will form a normal distribution
-sample increases, statistics tend to get closer

Question 9

Central limit theorem

Answer 9

as sample size increases, distribution of sample means approaches a normal distribution