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The formula for calculating median on grouped data is
L + I *(50% * N-F)/f
L - lower limit of the median group
I - group interval
N - Number of frequency (total sum of frequencies in each group)
F - cumulative freqency for the group before the median group
f - frequency of the median group
Since median is just the same as the 2nd quartile, we use 0.5 in place of 50% in the formula. We can tweak the formula a little bit to calculate any percentile.
For example, if you want to calculate 35th percentile, change the formula to
L + I *(35% * N-F)/f
which is
L + I *(0.35 * N-F)/f.
Please note that L,I,F & f should reflect that of the group where the percentile falls. You can find this by these steps:
1) Calculate N * 0.35. Lets say N=50 then 50* 0.35 = 17.5.
2) Using cumulative frequency, identify the group where 17.5 falls.
3) Use L,I,F & f for that particular group in the formula L + I *(0.35 * N-F)/f
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∙ 14y ago
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Can a grouped of data be grouped?
Not sure what a "grouped of data" means!
How do you calculate the mode of grouped data if there are two classes with the same highest frequency?
Both classes are modal classes.
What are the categories by which data are grouped?
Data can be grouped or ungrouped. The categories data are grouped in depend on the data. For example, data collected about people could be grouped as male/female, by ages, or some other common characteristic. Data collected about dogs could be grouped by breed of dog, age, long hair/short hair, or size.
What is the mode of grouped data?
To calculate the mode.. Add the lower limit and upper liit of the class interval with the most frequency. :)))
What is definition of grouped data?
Grouped means the grouping of relevant data after analysis. When raw data is analyzed in proper and meaningful way then its transformed into groups and these groups are known as grouped data.
Definition of ungrouped data?
Ungrouped data is data that is not grouped in a specific order. Grouped data is a set of data that has unique characteristics in common.
What is continuous grouped data?
In continuous grouped data the data is collected continuously and in groups. Data collected is in class intervals the actual data values are not visible.
If data are organized with several values together the result is?
The result is a collection of grouped data.
What does 99.6 percentile mean?
A 99.6 percentile means that 99.6% of the data in the sample is at or below the data point given.
What is the opposite to raw data?
Grouped Data. (statistics)
How does raw data change into grouped data?
123456789987456321
How does raw data changes into grouped data?
123456789987456321
