Answer :
The first error Emi made in computing the variance is failing to find the difference of 89 - 78 correctly.
What is Mean?
This is defined as the average of the given numbers and is calculated by dividing the sum of given numbers by the total number of numbers.
In this case , sum of given numbers = 87+46+90+78+89 = 390
Divide 390 by the number of numbers which is = 5
390/5 = 78
Therefore Emi failed to find the difference.
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Answer:
emi failed to find the difference of 89 - 78 correctly.
Step-by-step explanation: