Question

HELP NOW PLEASE! ARE YOU SMART ENOUGH TO ANSWER THIS?

using the following set of data calculate the lower quartile the upper quartile and the interquartile range The set of data: 20,22,25,28,29,30,32,33,34

MAKE SURE TO SHOW HOW YOU FOUND THE lower quartile the upper quartile and the interquartile

Answer 1

Since there are 9 values, to find the Lower Quartile and Upper Quartile, you use the first 4 values and the last 4 values.

For Q1, you average the middle to values of your first 4 values since 4 is an even number. In this case (22+25)/2=23.5.
You do the same for Q3. (32+33)/2=32.5
For the interquartile range, you subtract Q1 from Q3. So, 32.5-23.5=9

Therefore, your lower quartile is 23.5, upper quartile is 32.5 and the interquartile range is 9.