Question

If the mean is 13
find the value of y .
(y, y+4, y+6, y+8, y+5,)​

Answer 1

Answer:

8.4

Step-by-step explanation:

Mean = Sum of all observations/No. of all observations = 13

=> (y + (y + 4) + (y + 6) + (y + 8) + (y + 5))/5 = 13

=> y + y + 4 + y + 6 + y + 8 + y + 5 = 13*5 => 65

=> 5y + 23 = 65

=> 5y = 65 - 23 => 42

∴ y = 42/5 => 8.4 is the mean.

Answer 2

Given :- If the mean is 13 find the value of y .(y, y+4, y+6, y+8, y+5) ?

Solution :-

we know that,

• Mean = (sum of observations) / (Total number of observation)

here , we have given that,

• Observations are = (y, y+4, y+6, y+8, y+5)
• Number of observations = 5
• Mean = 13 .

so,

→ Mean = (sum of observations) / (Total number of observation)

→ 13 = (y + y+4 + y+6 + y+8 + y+5) / 5

→ 13 * 5 = 5y + 23

→ 65 = 5y + 23

→ 5y = 65 - 23

→ 5y = 42

→ y = (42/5)

→ y = 8.4 (Ans.)

Hence, value of y will be 8.4.

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