00:01
So this one you wanted the mean median mode for two frequency tables.
00:05
And the first one, the midpoint of those ranges were 94, whoops, not 95, 94, 87.
00:17
So you're just adding them up, divide by 2.
00:22
80, 73, 66, 59, and 52, with a frequency, 2, 2, 3, 10, 15, 11, 6, and 3.
00:42
To find the mean, you take the median times the frequency.
00:47
So 2 times 94 is 188.
00:50
3 times 87 is 261.
00:54
80 times 10 is 800.
00:56
73 times 15 is 1095.
01:01
66 times 11 is 726.
01:04
59 times 6 is 354.
01:07
And 3 times 52 is 156.
01:11
We add up the total, your frequency total is 50.
01:15
The other total is 3 ,580.
01:18
So your mean x bar is 3 ,580 divided by 50, which is 71 .6...