Home › UP Board Class 10 › Mathematics › Statistics › For grouped data, the **class mark** of an inter…
For grouped data, the **class mark** of an interval is:
Athe highest frequency
Bmidpoint of interval
Cthe upper boundary
Dthe lower boundary
Answer & Solution
Correct answer: B. midpoint of interval
Class mark = (lower limit + upper limit) / 2. For 10–20 it is 15; for 20–30 it is 25.
Related questions
A number measuring how far the data are spread from the mean is the standard:A histogram is pulled out towards the low values, so the distribution is described as:The value that appears most often in a data set is the:Fifty weights are added together and the total divided by fifty. The result is the:On a box plot, the two ends of the rectangular box are marked by:A box plot is built from the minimum, maximum, median and the two:The third quartile of a data set is the same as the percentile numbered:The median of a data set is the same as the percentile numbered: