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Length of class interval or class size = Upper limit - Lower limit.
Given,
Upper limit = 75
Length of class interval or class size = 28
Let lower limit be x
28 = 75 - x
x = 75 - 28
x = 47 .
Therefore, Lower limit = 47 .
Given,
Upper limit = 75
Length of class interval or class size = 28
Let lower limit be x
28 = 75 - x
x = 75 - 28
x = 47 .
Therefore, Lower limit = 47 .
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