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Cumulative frequency gives the total number of events that occurred up to some value. Perhaps I want to show the number of accidents that occur in a year by the drivers age. A cumulative frequency plot would show me the total number of accidents from young drivers, say under the age of 21. I could easily come up with statistics such as 80% of all accidents occur from drivers ages 16 to 55, by examining the cumulative frequency.

Cumulative frequencies are used extensively in risk or reliability analysis. If I'm trying to find out how long light bulbs last, I may want statistics on the number that last less than 1,000 hours, or the lifetime as indicated by the manufacturer.

Another example: I may want to test the brakes of a car. I want to know the chances that the car will skid a long distance (further than the car is supposed to), so the cumulative frequency (long distances without stopping) is important.

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โˆ™ 2011-09-13 16:27:51
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Algebra

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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

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Q: Why use cumulative frequency?
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Related questions

How do you make a cumulative frequency table?

Given a frequency table,the first cumulative frequency is the same as the first frequency;the second cumulative frequency is the sum of the first cumulative frequency and the second [ordinary] frequency;the third cumulative frequency is the sum of the second cumulative frequency and the third [ordinary] frequency;and so on.An alternative definition is that the cumulative frequency for any value is the sum of all the frequencies less than or equal to that value.


What is cumulative frequency?

Cumulative frequency is the running total of class frequencies.


Why use cumulative frequency tables for BMI?

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What does cumulative frequency graph measure?

a cumulative frequency graph mearsure the cumulative frequency on the y-axis and the class boundaries on the x-axis


If the frequency is 4 what is the cumulative frequency?

The cumulative frequency is the running total of numbers, such as, frequency cumulative frequency 4 4 5 11 6 17 7 24 8 32


If the frequency is 3 what is the cumulative frequency?

It is 3 more than the cumulative frequency up to the previous class or value.


How do you find cumulative frequency?

By adding up the (one by one,) the frequency total in order to find the cumulative frequency, most commonly, you just then plot this on a cumulative frequency graph or box plot.


What is a slope in cumulative frequency?

It is the frequency for that point.


What is cumulative percent?

Cumulative percentage is another way of expressing frequency distribution. It calculates the percentage of the cumulative frequency within each interval, much as relative frequency distribution calculates the percentage of frequency.


What is the difference between a cummulative frequency graph and a cumulative frequency polygon?

A cumulative frequency polygon has straight lines connecting the points. A normal cumulative frequency diagram uses a smooth curve to join the points.


What is another name for cumulative frequency?

I've occasionally seen "cumulative frequency" shortened to the word "cume".


Is an ogive a graph of cumulative frequency distribution?

yes. An ogive is also known as a cumulative frequency graph.

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