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Rashid [163]
3 years ago
12

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

Mathematics
2 answers:
Nikitich [7]3 years ago
8 0

Answer:

12

Step-by-step explanation:

ALL YOU HAVE TO DO IS PUT THE NUMBERS IN ORDER THEN FIND THE MIDDLE NUMBER

Nataly [62]3 years ago
8 0

Answer:

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

Step-by-step explanation:

<h2><u>arrange the 12 numbers in order:</u></h2>

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

<h2><u>median </u></h2>

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

<h3>median is 11.5</h3>

<h2><u>first quartile</u></h2>

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

<h3>first quartile is 9.5</h3>

<h2><u>third quartile </u></h2>

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

<h3>third quartile is 14.5</h3>

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