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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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9y ago

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Related Questions

What is the difference between class intervals and class width in statistics?

Oh, dude, class intervals are the ranges that group data together in a frequency distribution, like 1-10, 11-20, etc. Class width is just the difference between the upper and lower boundaries of each class interval. So, basically, class intervals are like the neighborhoods where data hangs out, and class width is just the size of the houses in those neighborhoods.


What is the class width of the class interval 4-15?

class width is a width width is a width nothing as class width is a width dont be confuse


How do i determine the number of classes ie intervals estimate the frequency of the class with the least and greatest frequency and determine the class width on a histogram?

try sqrt(N) where N represents the number of observations you have...


What are the class intervals if the class width is 10 from the data of 0 to 60?

If you are choosing class intervals in preparation for making a histogram, and if you know that the data all fall in the range from zero through 60 then you could choose the intervals: 0 through 10 inclusive more than 10 to 20 inclusive move than 20 to 30 inclusive ... more than 50 to 60 inclusive


A what uses bars to represent the frequency of data that have been organized in intervals?

If the intervals are of different width, then it is a histogram.


What is the width in inches of a 44 inch circumference?

Circ. = pi x diam./width Thus, 44 = 3.14 x width and width = 44 / 3.14 You do the arithmetic.


Is the any Correlation between class width and student achievement?

There is no correlation between class width and student achievement. Class width is arbitrary (there are rules of thumb for class width, and it depends on the range of the data).


How do you find the interval in a frequency table?

First, you decide how many intervals you need. (Can be between 5-15). Then, you find the range (Max-Min=Range) Next you divide the range by the amount of intervals you wanted. The quotient is the width of your data Example: Intervals(Width=10 and Minimum=28)(When you add the width to the minimum, you should count the minimum too. Instead of 28+10=38, it would be 37 since the 28 count, and to check the answer you have to add ten going down) 28-37 38-47 48-57 58-67 68-77


Why do you you want to choose intervals of equal width?

Sometimes you do, sometimes you don't. It depends on the context.


What is the width of the seats on American Airlines?

The width of the seats on American Airlines varies depending on the aircraft and class of service. Generally, the width of the seats in economy class ranges from 17 to 18 inches, while in business and first class, the width can be up to 21 inches or more. It is recommended to check the specific aircraft and class of service for accurate seat width information.


What is a special type of bar graph that displays the frequencies of data in given intervals of equal width?

Histogram


Could you please provide a shape of crawling boards?

Width - about the width of a ladder Length - however long you want cleats spaced at intervals of between 30 to 40 cm