Statistics Flashcards
0
Q
Median
A
- 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
1
Q
Arithmetic Mean
A
The sum of a list of values/number values in the list
2
Q
Mode
A
- Value/values that appear the greatest number of times
- Possible that there are multiple modes in a list of numbers
3
Q
Weighted Average
A
- 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
4
Q
Averages to find missing numbers
When average and number of values is known
A
Average x number of values = sum
