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The width of class intervals is normally determined by the data and not whether you want to calculate the arithmetic mean.
For general population statistics you might use class widths of 6 or 10 years.
But if you were studying school children in the UK you might use the following, unequal bands:
Nursery-reception: 2 years
Years 1 and 2: 2 years
Years 3 to 6: 4 years
Years 7 to 9: 3 years (Lower secondary)
Years 10 to 11: 2 years (Upper secondary)
Years 12 to 13: 2 years (A levels).
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What is identify the class width?
they come in all sizes
What is class width?
Class width, from statistics, is the difference between the two boundaries of a class. A class is an interval that includes all of the values in a (quantitative) data set that fall within two numbers, the lower and upper limits of the class. Finally, a class boundary is the midpoint of the upper limit of one class and the lower limit of the next class.
Is it length times width or width times length?
It doesn't matter, the results are the same. A very basic law of arithmetic is: a times b = b times a So, in regard to the calculatuion of area, it DOES NOT MATTER .
Why should the class width be an odd number?
It need not be, and often is not.
How do you work out frequency density?
basically this is an exampleAGE (YEARS) FREQUENCY FREQUENCY DENSITYFD= Frequency DensityAge : 0
