Question

Calculate the average for this list of numbers 1.90 7.99 4.33 5.21

Answer 1

What you do is add up all the values, then divide by the number of values.
$\frac{1.90+7.99+4.33+5.21}{4}=\frac{19.43}{4}=4.8575$
The average of the data is 4.8575.