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Answer:

See below ~

Step-by-step explanation:

(a) Mean of the data

  • 2.4 + 1.6 + 3.2 + 0.3 + 1.5 / 5
  • 9/5
  • 1.8

(b) New mean after each data point increased by 10

  • 12.4 + 11.6 + 13.2 + 10.3 + 11.5 / 5
  • 59/5
  • 11.8

(c) New mean after each data point doubled [from (b)]

  • 24.8 + 23.2 + 26.4 + 20.6 + 23 / 5
  • 118/5
  • 23.6
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Answer:

a) 1.8

b) 11.8

c) 23.6

mean: sum of numbers/total numbers

Part A

⇒ mean: (2.4+1.6+3.2+0.3+1.6)/5 ⇒ 9/5 ⇒  1.8

Part B

If all the data's are increased by 10

{12.4, 11.6, 13.2, 10.3, 11.5}

Then mean ⇒ (12.4+11.6+13.2+10.3+11.5)/5 ⇒ 11.8

Part C

if the new data doubled, the mean will be double

11.8 * 2 = 23.6

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