In statistics, ___________________________ classification includes data according to the time period in which the items under consideration occurred.

The value lying half way between the upper limit and lower limit of the class is:

If the class mid points in a frequency distribution of age of a group of persons are 25, 32, 39, 46, 53 and 60. The size of class interval is:

The first step in tabulation is:

One dimensional diagram is:

In a moderately symmetric distribution mean, median and mode are connected by:

. Find the Quartile deviation for the distribution: Class Interval: 0 – 15 15 -30 30 – 45 45 – 60 60 – 75 75 – 90 90 – 105

f: 8 26 30 45 20 17 4

. From the monthly income of 10 families find the coefficient of range is:

S. No: 1 2 3 4 5 6 7 8 9 10

Income in (Rs.): 145 367 268 73 185 619 280 115 870 315

Find the Mean deviation from the Mean for the following Class Interval: 0 – 10 10 – 20 20 – 30 30 – 40 40 -50 50 – 60 60 – 70

Frequency: 8 12 10 8 3 2 7

Find the range for the following data 14, 16, 16, 14, 22, 13, 15, 24, 12, 23, 14, 20, 17, 21, 22, 18, 18, 19, 20, 17, 16, 15, 11, 12, 21, 20, 17, 18, 19, 23.

Which of the following is not a measure of dispersion

Find the mean of these numbers:

5,11,2,12,4,2

Find the median of these numbers:

4,2,7,4,3

Fine the mean, median, and mode/s of the data.

2, 8, 10, 12, 56, 9, 5, 2, 4

The mode of 12, 17, 16, 14, 13, 16, 11, 14 is

Mode is the

Age distribution of 200 employees of a firm is given below and calculate semi inter quartile range = (Q3 – Q1 ) /2 of the distribution: Age in Years (less than): 25 30 35 40 45 50 55 No of Employees: 10 25 75 130 170 189 200

For a frequency distribution mean deviation from mean is computed by