The age groups and the number of persons in the age groups, who donated blood in blood donation camp is given below. Find the measures of central angles to show the information by a pie diagram.
|Age group (Years)||20-25||25-30||30-35||35-40|
|No of persons||80||60||35||25|
The table below shows the yield of jowar per acre. Show the data by histogram.
|Yield per acre (quintal)||2 - 3||4 - 5||6 - 7||8 - 9||10 - 11|
|No. of farmers||30||50||55||40||20|
In the following table, the investment made by 210 families is shown. Present it in the form of a histogram.
|10 - 15||15 - 20||20 - 25||25 - 30||30 - 35|
|No. of families||30||50||60||55||15|
Time alloted for the preparation of an examination by some students is shown in the table. Draw a histogram to show the information.
|Time (minutes)||60 - 80||80 - 100||100 - 120||120 - 140||140 - 160|
|No. of students||14||20||24||22||16|