Math Problem Statement
Exercise 2-13 Algo Consider the following frequency distribution:
Interval Frequency 10 < x ≤ 20 36 20 < x ≤ 30 39 30 < x ≤ 40 49 40 < x ≤ 50 28 a-1. Construct the relative frequency distribution.
Note: Round your answers to 3 decimal places.
a-2. What proportion of the observations are in the interval 20 < x ≤ 30? Note: Round your answer to 3 decimal places.
b-1. Construct the cumulative frequency distribution and the cumulative relative frequency distribution.
Note: Round "Cumulative Relative Frequency" to 3 decimal places.
b-2. How many of the observations are 40 or less?
c. What proportion of the observations are 40 or less?
Note: Round your answer to 1 decimal place.
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Frequency Distribution
Relative Frequency
Cumulative Frequency
Formulas
Relative Frequency = Frequency / Total Frequency
Cumulative Frequency = Sum of all frequencies up to and including the current interval
Cumulative Relative Frequency = Cumulative Frequency / Total Frequency
Theorems
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Suitable Grade Level
Grades 10-12
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