Chapter 12 - Averages and Measures of Spread Flashcards
1
Q
Mode
A
Most frequently occurring value in a set of data
2
Q
Mean
A
Mean = addition of all data/number of datas
3
Q
Mean (using frequency and ranges of data)
A
Mean = frequency * midpoints/addition of all frequency
4
Q
Median
A
The middle value of data when it is arranged in increasing order
5
Q
What is Q1
A
Lower quartile - 25% way through data
6
Q
What is Q2
A
median
50% way through data
7
Q
What is Q3
A
Upper quartile - 75% way through data
8
Q
IQR
A
Interquartile range = Q3 - Q1
9
Q
Frequency density
A
Fd = frequency/class width (range in one data)
