2/10 or 1/2 = .5 you would divide 2 by 2 and 10 divided by 2 (whatever you multiply or divide by on the top you must do on the bottom)
2/10=.50
3/100=.03 (divide 3 by 10=.03)
The mean = 28.55, while the standard deviation is 13.16
1. The histogram is an attachment
<h3>How to calculate for the mean of the data set</h3>
We have the following numbers
24 30 4 42 40 26 23 36 12 45 29 21 34 16 47 28 32 54 19 9
The sum of these numbers is given as
571
The total numbers = 20
The mean = 571/20
= 28.55
<h3>2 = How to find the standard deviation</h3>
= (24 - 28.55)2 + ... + (9 - 28.55)/20 - 1
= 3292.95/19
= 173.31315789474
s = √173.31315789474
= 13.164845532506
Read more on mean and standard deviation here:
brainly.com/question/26941429
#SPJ1
34 + 0 + 18 + 26
= (34 + 26) + (0 + 18)
= 60 + 18
= 78
Used:
a + b = b + a - commutative property
0 + a = a - identity property
Thus you made <u>$20 per hour</u>
<u></u>
Hope that helps!