Question

Determine the stander deviation of the set 12, 6, 15, 10, 18, 5, 5, 6, 6, 3, 6, 10, 6, 7,6. Select one: O a. 4.1 O b. 5.0 O C.4.3 d. 3.9 o O e. 4.8 O f.5.1 O 8. 5.4

Answer 1

The answer for first one is a) 4.1

The answer for second one is b) 5.30

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Solution

FIRST QUESTION

First we compute mean = 12 + 6 +15 + 10+ 18+5+5+6+6+3+6+10+ 6+ 7 + 6 15 8.0667

Now standard deviation VE (x-x)² (6-8.0667)² - (2-4.0667)?+ (6-8.0667)2 + ... o 4.1

SECOND QUESTION

So have twenty forty 5's thirty ten (remaining) and 7's. So aggregate value of these numbers = 20x4 + 40x5 +30x6+ 1087 1 530 Now, total her numbers present = 100 53 0 Mean 100 - 5.3