[centred at the class mark...] While computing mean of grouped data, we assume that the frequencies are

For Competitive Exams

While computing mean of grouped data, we assume that the frequencies are

centred at the class marks of the classes

evenly distributed over all the classes

centred at the upper limits of the classes

centred at the lower limits of the classes

Explanation:
While computing the mean of grouped data, we assume that the frequencies are centred at the class marks of the classes.

Additional Questions

The method used to find the mean of a given data is(are):	Answer
If $x_1, x_2, x_3,….., x_n$ are the observations of a given data. Then the mean of the observations will be:	Answer
The mode and mean is given by 7 and 8, respectively. Then the median is:	Answer
The mean of the data: 4, 10, 5, 9, 12 is;	Answer
The median of the data 13, 15, 16, 17, 19, 20 is:	Answer
If AM of a, a+3, a+6, a+9 and a+12 is 10, then a is equal to;	Answer
The class interval of a given observation is 10 to 15, then the class mark for this interval will be:	Answer
Construction of a cumulative frequency table is useful in determining the	Answer
The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its	Answer
While computing mean of grouped data, we assume that the frequencies are	Answer

Share with Friends