Question

What is the first quartile (Q1) of the data set?

51, 42, 46, 53, 66, 70, 90, 70

Answer 1

first off, it needs to be sorted; then divide it evenly into 4 pieces

Answer 2

51, 42, 46, 53, 66, 70, 90, 70
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q0 q1 q2 q3 q4

it looks like we fall inbetween positions so we are going to have to average the values on each side

Answer 3

but its important to get it sorted low to high first so you have the correct values in each position