16,15,13,12,17,14,11,9,11,9,10,9 find the median, first quartile (Q1), and third quartile (Q3)

median = 11.5 . first quartile = 9.5 , third quartile = 14.5

Step-by-step explanation:

9,9,9,10,11,11,12,13,14,15,16,17

since there is an even number (12)

we can divide by 2

12 /2

= 6th position and 7th position

= 11 + 12

= 23 / 2 = 11.5

is also known as the lower quartile is half of the median position

6/2 = 3rd position and 7/2 = 3.5th position  

9 + 10 = 19

19 / 2 = 9.5

also known as upper quartile

is the position of median + position of lower quartile

= 6 +3 = 9th position and 7 +3 = 10th position

= 14 + 15 = 29

29/2 = 14.5

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step-by-step explanation:

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step-by-step explanation: