Year 1 - Measures Of Location And Spread Flashcards
(6 cards)
1
Q
What is a measure of location
A
Single value which describes a position in a data set. If single value describes centre of data, called a measure of central tendency
2
Q
How do you calculate x bar (mean) of the data
A
Sum of the data values/ number of data values
3
Q
How do you calculate mean for data given in a frequency table
A
Sum of the products of the data values and their frequencies /sum of frequencies
4
Q
What is the modal class
A
Class with highest frequency
5
Q
What is the lower quartile
A
One quarter of the way through the data set
6
Q
A
