Question

The mean temperature for the first 7 days in January was 3 °C.

Answer 1

$m = \frac{a_1 + a_2 + ... + a_n}{n}\\~\\m = \frac{3 * 7 + 2}{8} = \frac{21 + 2}{8} = \frac{23}{8} = 2,875$

Answer: 2,875.