Question

The mean temperature for the first 7 days in January was 4 °C.

Answer 1

4. 125° C

the mean is calculated as

mean = $\frac{sum}{count}$

here the mean = 4 and the count = 7, calculate the sum

4 = $\frac{sum}{7}$ (cross- multiply )

sum = 4 × 7 = 28

for 8 days add 5 to the sum and divide by 8 for the mean

sum = 28 + 5 = 33

mean = $\frac{33}{8}$ = 4.125° C

Answer 2

28 i think im only 11 so plz dont get mad if i got it wrong