Statistics

Question 0

Median

Answer 0

• Middle value of a list when the numbers are in order
• Place values in order and select middle value
• When no even number of values, take the middle two and divide by 2

Question 1

Arithmetic Mean

Answer 1

The sum of a list of values/number values in the list

Question 2

Mode

Answer 2

• Value/values that appear the greatest number of times

- Possible that there are multiple modes in a list of numbers

Question 3

Weighted Average

Answer 3

• Average of two or more groups that do not all have the same set of numbers
• Multiply each average by weighting factor and divide by total number of students

Question 4

Averages to find missing numbers

When average and number of values is known

Answer 4

Average x number of values = sum