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Find create a gropued frequency distribution table {77,40,85,82,98,93,66,78,94,50,57}

Solution:
Your problem `->` create a gropued frequency distribution table {77,40,85,82,98,93,66,78,94,50,57}


`77,40,85,82,98,93,66,78,94,50,57`

Here minimum value is 40 and maximum value is 98
ClassClass BoundariesTally marks
41 - 50
51 - 60
61 - 70
71 - 80
81 - 90
91 - 100

Class boundaries : subtracting 0.5 from lower class limit and adding 0.5 to upper class limit
ClassClass BoundariesTally marks
41 - 5040.5 - 50.5
51 - 6050.5 - 60.5
61 - 7060.5 - 70.5
71 - 8070.5 - 80.5
81 - 9080.5 - 90.5
91 - 10090.5 - 100.5

For each value draw a mark, next to the class in which this value exists.
`77,40,85,82,98,93,66,78,94,50,57`

ClassClass BoundariesTally marks
41 - 5040.5 - 50.5||
51 - 6050.5 - 60.5|
61 - 7060.5 - 70.5|
71 - 8070.5 - 80.5||
81 - 9080.5 - 90.5||
91 - 10090.5 - 100.5|||

Count marks to determine the total frequency of each class.
ClassClass BoundariesFrequency
41 - 5040.5 - 50.52
51 - 6050.5 - 60.51
61 - 7060.5 - 70.51
71 - 8070.5 - 80.52
81 - 9080.5 - 90.52
91 - 10090.5 - 100.53






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