Question

The mean of 20 observation is 36. Find the new mean if
1. Each observation is divided by 5
2.each observation is multiplied by 5
3. Each observation is increased by 2
4. 2 is subtracted from each observation
5. 5 is added to each observation
Plz tell me the answer
Today is my exam.....

Answer 1

Answer:

Step-by-step explanation:

(1) new mean is 4

(2) new mean is 100

(3) new mean is 22

(4) new mean is 18

(5) new mean is 25

It has happened because the number are added, subtracted, divided or multipled form the whole given mean

Hope it helps you

Answer 2

Answer:

(1) new mean = 36 / 5 = 7.2

(2) new mean = 36 * 5 = 180

(3) new mean = (20×36+2×20)/20 = 38

(4) new mean = 36 - 2 = 34

(5) new mean = (20×36+5×20)/20 = 41

Hope it helps

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