| Practice
Page |
Math
A |
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You will need paper, a pencil and a calculator. |
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1. The following data
are exam grades of 10 students in a math
class.
|
Interval |
Frequency |
|
69 - 76 |
1 |
|
77 - 84 |
4 |
|
85 - 92 |
4 |
|
93 - 100 |
1 |
a) Which
interval contains the lower quartile?
b) Which interval contains the
upper quartile?
c) If students who received at
least an 85% on this exam received a
"math
star" pencil , what percent of the students received a pencil?
ANSWER
2. The following data represent the
heights ( in inches) of 14 students in Mrs. Schultzkie's math class: 65,
63, 68, 59, 74, 59, 68, 61, 64, 60, 69, 72, 55, 64.
|
Interval |
Frequency |
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55-58 |
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59-62 |
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63-66 |
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67-70 |
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71-74 |
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a) Complete the table.
b) Which interval contains median?
c) Which interval contains the upper quartile?
d) What percent of the students are shorter than
5 feet 7 inches?
ANSWER
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