relative frequency distribution

The frequency distribution for the systolic blood pressure readings (in millimeters of mercury - mm Hg) of 200 randomly selected college students is given. Systolic blood pressure reading Number of students 89.5 - 104.5 24 104.5 - 119.5 62 119.5 - 134.5 72 134.5 - 149.5 26 149.5..

80 randomly selected batteries were tested to determine their lifetime (in hours). The following frequency distribution was obtained. Lifetime of batteries Frequency 63.5 - 74.5 10 74.5 - 85.5 15 85.5 - 96.5 22 96.5 - 107.5 17 107.5 - 118.5 11 118.5 - 129.5 5 Find the ..

A survey of 47 selected distributions showed these number of days that the load took to reach the shipment from the day it was ordered. Days Frequency 1 - 4 12 5 - 8 8 9 - 12 15 13 - 16 5 17 - 20 7 Find the mean and the modal class of the data. => 9.39 and 9 or 9.39 and 9 - 12 o..

The frequency distribution for the rainfall readings (millimeters) of 60 selected cities is shown. Select the percentile graph for the data. Rainfall range Number of cities 0 - 2 18 2 - 4 12 4 - 6 7 6 - 8 13 8 - 10 10 => Graph 1 or Graph 2 or both Graph 1 & Graph 2 or none of th..

The number of people of different age groups visiting a recreation club in a town are as shown in the frequency distribution table. Age group Number of people 10 - 15 9 15 - 20 22 20 - 25 35 25 - 30 28 30 - 35 31 35 - 40 17 Find the mean of the data. => 26.06 or 142 or 616.67 or..

A survey was conducted in a city to find the number of people (in %) of different age groups who did not complete their high school. The results are as shown in the frequency distribution table. Age group Percentage of people 25 - 34 12 35 - 44 18 45 - 54 23 55 - 64 37 65 - 74 4..

The distribution of the ages of the members of a colony is as follows : Age Frequency 0 - 20 35 21 - 30 15 31 - 40 20 41 - 50 25 51 - 60 15 61 - up 10 If a person is selected at random, then find the probability that his/her age is over 41 years and under 60. => 1 8 or 1 3 or 5 ..

The frequency distribution shown here illustrates the number of goals scored by country X in the last 30 matches. Number of goals scored Number of matches played 0 12 1 8 2 2 3 3 4 or more 5 If a match is selected at random, then what is the probability that the number of goals ..

The mean of the following frequency distribution is 18.5. Find the value of t . x 18 23 t 15 16 f 2 9 4 8 7 => 30 or 20 or 30.6 or 20.6..

The daily sales of books in a book stall for 20 consecutive days are: 20 15 32 18 40 9 12 19 22 28 31 54 42 39 45 16 60 38 44 25 Find the class limit in which the sales are maximum by constructing a frequency distribution table with 5 classes. => 32 - 42 or 20 - 30 or 9 - 19 or ..