Other Measures of Location Flashcards
1
Q
You can calculate other measures of location such as…
A
quartiles and percentiles
2
Q
what do percentiles split the data set into?
A
100 parts - the 10th percentile lies 1/10th of the way through the data
3
Q
How do you find the lower quartile for discrete data?
A
Divide n by 4
If whole number, LQ is halfway between this data point and one above.
If not whole number, round up
4
Q
How do you find the upper quartile for discrete data?
A
Find 3/4 of n
If whole number, UQ is halfway between this point and one above
If not whole number, round up
5
Q
Why do we use interpolation?
A
To estimate the median, quartiles and percentiles
6
Q
When using interpolation, we have to assume…
A
data values are evenly distributed within each class
