Measures of central tendency Flashcards
unit 2.1
1
Q
What are measures of location ?
A
single value which describes a position in a data set
2
Q
What are measures of central tendency ?
A
if the single value describes the centre of the data
3
Q
What is the mode/modal class ?
A
most often occurring
4
Q
When is it best to use the mode/modal class ?
A
when dealing with qualitative data
5
Q
A
6
Q
A
7
Q
What is the median ?
A
the middle value when data is put in order
8
Q
When is it best to use the median ?
A
quantitative data with extreme values
9
Q
What is the formula for the mean ?
A
x bar = summation of x / n
10
Q
What is the formula for the mean in a frequency table ?
A
x bar = summation of x times f / summation of f
11
Q
When is it best to use the mean ?
A
quantitative data represented accurately
