Determine the average daily temperature and the daily temperature amplitude using the following data

Determine the average daily temperature and the daily temperature amplitude using the following data: at 7 o’clock -3 degrees, at 13 o’clock +5 degrees, at 19 o’clock -1 degrees?

1) In order to find out the average daily temperature in this problem, you need to find the sum of temperatures 7 hours, 13 hours, 19 hours, and then divide the resulting number by 3, since we calculate it from three measurements during the day.
(-3 ° C + 5 ° C – 1 ° C) / 3 = 1/3 ° C – average daily temperature.
2) In order to find out the average daily temperature amplitude, you need to subtract the lower one from the larger temperature measured during the day.
5 ° C – (-3 ° C) = 8 ° C – average daily temperature range.
Answer: 1/3 ° C; 8 ° C.