Data analysis Flashcards
1
Q
Mean
A
Add up all numbers, divide by number of numbers
2
Q
Mode
A
most commonly occurring number in a set e.g. 1233,4445,66666,7,9
3
Q
Median
A
middle value in a group of ranked data e.g. 12, 16, 89, 134, 198
4
Q
Standard deviation
A
- how spread around the mean the data is
- Measure of average distance between each data item above and below the mean, ignoring plus or minus values
5
Q
Range
A
difference between the highest and lowest value in the data set
6
Q
Primary data
A
Information collected or observed directly from first hand experience
7
Q
Secondary data
A
Data collected for a purpose other than the current one
