Question
Consider the following relative frequency distribution:
Interval Relative Frequency
−20 < x ≤ −10 0.26
−10 < x ≤ 0 0.22
0 < x ≤ 10 0.04
10 < x ≤ 20 0.26
20 < x ≤ 30 0.22
a-1. Suppose this relative frequency distribution is based on a sample of 48 observations. Construct the frequency distribution.
a-2. How many of the observations are more 10 but no more than 20?
b-1. Construct the cumulative frequency distribution.
b-2. How many of the observations are −10 or less?
Interval Relative Frequency
−20 < x ≤ −10 0.26
−10 < x ≤ 0 0.22
0 < x ≤ 10 0.04
10 < x ≤ 20 0.26
20 < x ≤ 30 0.22
a-1. Suppose this relative frequency distribution is based on a sample of 48 observations. Construct the frequency distribution.
a-2. How many of the observations are more 10 but no more than 20?
b-1. Construct the cumulative frequency distribution.
b-2. How many of the observations are −10 or less?
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