measures of central tendancy Flashcards
1
Q
what do measures of central tendency tell us
A
the central value for a set of data
2
Q
what are the three measures of central tendency
A
mean, mode and median
3
Q
how is the mean calculated
A
adding up all the numbers and dividing by the amount of numbers
4
Q
when can the mean not be used
A
for nominal data
5
Q
when would the mean be misrepresentative of the full data set
A
when there are extreme values
6
Q
what is the median
A
the middle value in an ordered list
7
Q
what is an advantage of using the median
A
not affected by extreme scores
8
Q
what is a disadvantage of using the median
A
not as sensitive as the mean as not all values are reflected in the median
9
Q
which measure of central tendency is the most common
A
the mode
10
Q
when is the mode useful
A
when data is in categories, for example, nominal data
