The data below shows the temperature of the water in a swimming pool over a two week period.

week 1

day temperature (°f)
monday 58
tuesday 48
wednesday 49
thursday 61
friday 58
saturday 51
sunday 39

week 2

day temperature (°f)
monday 68
tuesday 74
wednesday 73
thursday 75
friday 70
saturday 67
sunday 63
how many degrees greater is the mean temperature in week 2 than in week 1?

To find the mean, you add all of the data from one section (week 1), and then u divide the total # by however many # there was. So let's say the total # was 150, and there was 8 #. So divide 150/8. Repeat for the second one. Once u have the 2 numbers (which should be close to the numbers because it's the average) you subtract them. All u have to do is plug to #s in. Hope I helped :)