Use the following to answer questions :
The following table gives the cumulative frequency distribution of annual incomes (in thousands of dollars)for a sample of 200 families selected from a city.
-The percentage of families with an income of $70,000 or more,rounded to one decimal place,is:
Definitions:
Relative Frequency
The proportion of times a particular value occurs in relation to the total number of observations.
Distribution
The arrangement, frequency, or spread of something across a particular area or among a specified group.
Average
A statistic specifying the sum of the values that the items in a class have on a quantitative variable P, divided by the number of items.
Distribution
In logic, refers to the way a term is used in a categorical proposition to apply to all members of its category, also relevant in mathematical operations and probability theory.
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