The data represents the miles per gallon (mpg) for vehicles manufactured by a company in the past five years. Find the first quartile, Q1, of the data. Data: 28.7, 25.5, 21.8, 21.6, 20.5, 16.7, 16.3, 15.4, 13.9.

Answer

15.40

15.85

16.3

16.15

Question

The data represents the miles per gallon (mpg) for vehicles manufactured by a company in the past five years. Find the first quartile, Q1, of the data. Data: 28.7, 25.5, 21.8, 21.6, 20.5, 16.7, 16.3, 15.4, 13.9.

Answer

15.40
		
15.85
		
16.3
		
16.15

directrix · Answer

Use the online box-and-whisker plot generator. The plot shows the five summary numbers for the plot. One of them is the one which you need. http://easycalculation.com/statistics/box-plot-grapher.php

directrix · Answer

I snipped the plot before the first Quartile so that you could paste your numbers there and crank out Q1.