Question

Plz answer both parts of 10th question.



First and proper answer would be marked as brainliest and i will also thank his 5 answers

No spam plz​

Answer 1

Answer:

Step-by-step explanation:

i)Mean of 20 observations = 15

∴ Sum of 20 observations = 15×20=300

Replacing 3 and 14 by 8 and  

9 will mean that 3 + 14= 17 is replaced by 8 + 9 = 17.

Hence there will be no effect on the sum. It will still remain 300, so the mean will not change and will remain 15.

ii)The median of the data​ is 7

There is a formula which relates Mean, Median and Mode all together, which is:

Mean - Mode = 3 (Mean - Median)

Putting the values of Mean as 6 and Mode as 9, we get:

6 - 9 = 3 (6 - Median)

⇒ 3(6 - Median) = -3

⇒ 6 - Median = -3/3 = -1

⇒ Median = 6 - (-1) = 6 + 1 = 7

So, median is 7.

Answer 2

Step-by-step explanation:

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