Question

The average of apper class limit and lower class limit is known as.
1) Class- mark
2) Frequency
3) Class-frequency
4) Cumulative frequency
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Answer 1

The average of upper class limit and lower class limit is known as(4) Class mark.

Additional information:

• Class mark is the mid value of the class interval.
• Class mark is calculated to find the mean of grouped data.
• It is usually denoted as 'x' in the mean calculation of grouped data.
• Class mark is also called as Mid value.