Given raw data: {18, 20, 11, 10, 8, 6, 12, 4}
<span>ordered data: {4, 6, 8, 10, 11, 12, 18, 20} </span>
<span>minimum = 4 </span>
<span>maximum = 20 </span>
<span>median = (10 + 11) / 2 = 10.5 </span>
<span>first quartile is median of: {4, 6, 8, 10} or 7 </span>
<span>third quartile is median of: {11, 12, 18, 20} or 15 </span>
<span>now perform the same steps on the second set of data values </span>
<span>{60, 50, 130, 200, 180, 150, 100, 140}
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Answer:
11 races
Step-by-step explanation:
The reason being that 18 is 4 less than twice the number Kelly ran. 18+4=2x when x equals the races Kelly ran. so, 18+4=22 so 22=2x. if you divide each side by 2, you get 11=x. so, kelly ran 11 races
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