SYMBOLS

Question 1

x with a bar on top, called x-bar

Answer 1

The sample mean

Formula: Add all data together, then divide it by how many pieces of data were added.

Question 2

SD:

Answer 2

Standard Deviation

Question 3

Uppercase Sigma (looks like an E)

Answer 3

Summation, i.e. that all data sets will be processed in the following equation, then added together.

Question 4

Lowercase Mu (looks like u):

Answer 4

Mean of the population data set.

Question 5

s:

Answer 5

Standard Deviation for the sample data statistic.

Formula:
s = (square root of (s^2))

Same thing as:

s= square root of ((Uppercase Sigma ((x-x-bar)^2 )) / n-1)

Question 6

s^2:

Answer 6

Variance for the sample data statistic

Formula:

s^2 = (Uppercase Sigma ((x-x-bar)^2 )) / n-1

Question 7

Lowercase sigma (looks like o with a line on top pointing right):

Answer 7

Standard deviation for the population data parameter.

Question 8

Lowercase sigma (looks like o with a line on top pointing right) ^2

Answer 8

Variance for the population data parameter.