Teacher/User Name: DEMO Name:__________________________ Practice Problems Period: ________ Date: ____________

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### Solve:

1) The picture describes the number of chocolate chips that a local bakery used each day. Describe the center and spread of the picture.
 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +− − −+− − −+− − −+− − −+− − −+− − −+− − −+− − −+− − −+− − −+ 40 75 110 145 180 215 250 285 320 355 390 Chocolate Chips

2) Fiona made a picture of the number of cookies sold during the year. Describe the center and spread of the picture.
Cookies Sold
 Frequency 33.6%  29.4%  25.2%  21%  16.8%  12.6%  8.4%  4.2% 5 17 29 41 53 65 77 89 101 Number of Cookies
3) A poll of people 30 and over was taken to find out how many hours they spent on the computer this week. Describe the center and spread of the picture.
Number of Hours on the Computer
 Frequency 224  196  168  140  112  84  56  28 5 21 37 53 69 85 101 117 133 Hours

4) Annie made a picture of the number of cookies sold during the year. Describe the center and spread of the picture.
Cookies Sold
F
r
e
q
u
e
n
c
y
160+
|
144+
|
128+
|
112+
|
96+
|
80+
|
64+
|
48+
|
32+
|
16+
|
0+
−+−−+−−+−−+−−+−−+−−+−−+−−+−−+−−+−
5095140185230275320365410455500
Number of Cookies

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