The average of 7 numbers is 52.If 5 new numbers with sum of deviation 17 from
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Question:
The average of 7 numbers is 52. If 5 new numbers with sum of deviation 17 from average are included and 3 numbers 56 57 51 are excluded then find the average?
Answer:
The average is 53.
Step-by-step explanation:
Average of 7 numbers = 52
The total value of the 7 numbers = 52×7 = 364
Total value of the 5 new numbers added will be
= 5×52 + sum of derivations
= 260+17
= 277
The sum of the value of the three numbers removed
= 56+57+51
= 164
Now the total numbers = 7+5-3= 9
Total value= 364+277-164 = 477
New Average = 477/9 = 53
Hope it helps!!✔✔
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