EASY
10th CBSE
IMPORTANT
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In a grouped frequency distribution, the mid-values of the classes are used to measure which of the following central tendency?
(a)Median
(b)Mode
(c)Mean
(d)All of these

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Important Questions on Statistics
EASY
10th CBSE
IMPORTANT
In the formula: for finding the mean of the grouped data, are deviations from (assumed mean) of

EASY
10th CBSE
IMPORTANT
In the formula: , for finding the mean of grouped frequency distribution,

EASY
10th CBSE
IMPORTANT
While computing mean of grouped data, we assume that the frequencies are

EASY
10th CBSE
IMPORTANT
If 's are the mid-points of the class intervals of grouped data, 's are the corresponding frequencies and is the mean, then is equal to

EASY
10th CBSE
IMPORTANT
Construction of a cumulative frequency distribution table is useful in determining the

EASY
10th CBSE
IMPORTANT
The times, in seconds taken by athletes to run a hurdle race are tabulated below:
Class | ||||||
Frequency |
The number of athletes who completed the race in less than seconds is

MEDIUM
10th CBSE
IMPORTANT
Consider the following frequency distribution:
Class | |||||
Frequency |
The upper limit of the median class is

EASY
10th CBSE
IMPORTANT
Daily wages of a factory workers are recorded as:
Daily wages (in ) | |||||
Number of workers |
The lower limit of the modal class is
