Other measures of location Flashcards
unit 2.2
1
Q
What is the formula for Q1 for discrete data ?
A
n/4
2
Q
What is the formula for Q3 for discrete data ?
A
3/4 n
3
Q
What do you do with your answer for the quartiles of discrete data if it is a whole number ?
A
you find the midpoint of that and the value above
4
Q
What do you do with your answer for the quartiles of discrete data if it is not a whole number ?
A
round it up and pick that data point
5
Q
What is the formula for Q1 for grouped continuous data ?
A
n/4 th data value
6
Q
What is the formula for Q2 for grouped continuous data ?
A
n/2 th data value
7
Q
What is the formula for Q3 for grouped continuous data ?
A
3/4 n th data value
8
Q
What is the formula for interpolation ?
A
value = lb + (pl/gf x cw)
