Statistics

Question 1

Average (Arithmetic Mean)

Answer 1

Question 2

Evenly Spaced Sets

Answer 2

Question 3

Counting the Number of Integers in a Set of Consecutive integers (inclusive)

Answer 3

Highest Number - Lowest Number + 1

Question 4

Counting the Number of Multiples of an Integer in a Set of Consecutive integers (inclusive)

Answer 4

Question 5

Average (Arithmetic Mean) in a Set of Consecutive Integers

Answer 5

Question 6

Weighted Average Equation

Answer 6

Question 7

Boundaries of a Weighted Average

Answer 7

The weighted average of two different data point with the greater number of observations or the the greater weighted percentage

Question 8

Median

Answer 8

When a set is numerically ordered, the median is the value in the middle of the arranged set

Question 9

Calculating Median with an Odd # of Terms

Answer 9

Question 10

Calculating the Median with an Even # of Terms

Answer 10

Question 11

Mean = Median

Answer 11

In an evenly spaced set, the mean is equal to the median of the set

Question 12

Mode

Answer 12

The mode is the number that appears most frequently in a data set

Question 13

Range

Answer 13

= Highest Number in a Set - Lowest Number in a Set

Question 14

Standard Deviation Range

Answer 14

-> High Value = mean + x(sd)
-> Low value = mean - x(sd)

Question 15

Two Important Standard Deviation Rules

Answer 15

Adding/Subtracting a constant to each term in a set of numbers
–> The standard deviation does not change

Multiplying/Dividing each term in a set of numbers by a constant
–> The standard deviation will also be multiplied or divided by that amount