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julia-pushkina [17]
3 years ago
15

SEE IMAGE FOR QUESTION

Mathematics
1 answer:
Aloiza [94]3 years ago
4 0

Answer:

<h3>17</h3>

<u>The range is the difference of the greatest and smallest numbers:</u>

  • 5 - (-5) = 10
<h3>18</h3>

<u>Semi-interquartile of the range is:</u>

  • (Q3 - Q1)/2 = 12

<u>Since Q1 = 15, find Q3:</u>

  • Q3 - 15 = 2*12
  • Q3 = 24 + 15 = 39

<em>Note</em>. Probably the numbers mixed up in the question.

<u>If we swap them:</u>

  • <em>Q3 = 2*15 + 12 = </em><em>42 </em><em>would be the correct answer. </em>
<h3>19</h3>

<u>Given data:</u>

  • 3, 5, 7, 9, 11

<u>The mean:</u>

  • (3 + 5 + 7 + 9 + 11)/5 = 7

<u>Variance, the average of the squared differences from the mean:</u>

  • [(3 - 7)² + (5 - 7)² + (7 - 7)² + (9 - 7)² + (11 - 7)²]/5 = 8
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