Answer:
21
Explanation:
The missing value is x.
Let's equate the terms to the mean.
⇒ 15 + 17 + 13 + 19 + x / 5 = 17
⇒ 64 + x = 85
⇒ x = 21
add all divide by to total no.of value
64/4=16
mean=16
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