Calculation of Median by drawing two types of cumulative frequency polygon.

Calculation of Median by drawing two types of cue frequency curve and cumilative frequency polygon.

The following observations relate to the height of a group of persons. Draw the two types of cumulative frequency polygons and cumulative frequency curves and determine the median. Height in cms Frequency 140-143 143-146 146-149 149-152 152-155 155-158 158-161 161-164 164-167 167-170 170-173 173-176 176-179 179-182 3 9 26 31 45 64 78 85 96 72 60 43 20 6

Consider the following statements related to cumulative frequency polygon of a frequency distribution, the frequencies being cumulated from the lower end of the range : 1. The cumulative frequency polygon gives an equivalent representation of frequency distribution table. 2. The cumulative frequency polygon is a closed polygon with one horizontal and one vertical side. The other sides have non-negative slope. Which of the above statements is/are correct?

Following is the age distribution of a group of students. Draw the cumulative frequency polygon, cumulative frequency curve (less than type) and hence obtain the median value.

Find the median of the given cumulative frequency distribution.

Calculation Of Arithmetic Mean In Case Of Cumulative Frequency Distribution

Cumulative frequency table is given below. Which type of cumulative frequency is given. Try to build the frequencies of respective class intervals.

Draw a cumulative frequency curve and cumulative frequency polygon for the following frequency distribution by less than method. Age (in yrs). 0-9 10-19 20-29 30-39 40-49 50-59 60-69 No. of Person 5 15 20 23 17 11 9

If f_i, F_i, F'_i are respectively the frequency less than type cumulative frequency, greater than type cumulative frequency of i-th class and N be the total freqnency then which of the following is correct?