Advertisements
Advertisements
Question
The rainfall (in mm) in a city on 7 days of a certain week was recorded as follows:
| Day | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
| Rainfall (in mm) | 0.0 | 12.2 | 2.1 | 0.0 | 20.5 | 5.5 | 1.0 |
- Find the range of the rainfall in the above data.
- Find the mean rainfall for the week.
- On how many days was the rainfall less than the mean rainfall.
Solution
i. Range = (20.5 − 0.0) mm
= 20.5 mm
ii. Mean rainfall = `(0.0 + 12.2 + 2.1 + 0.0 + 20.5 + 5.5 + 1.0)/7`
= `41.3/7`
= 5.9 mm
iii. For 5 days (i.e., Monday, Wednesday, Thursday, Saturday, Sunday), the rainfall was less than the average rainfall.
APPEARS IN
RELATED QUESTIONS
Find the range of heights of any ten students of your class.
The range of the data: 21, 6, 17, 18, 12, 8, 4, 13 is ______.
The difference between the highest and the lowest observations in a data is its ______.
Some integers are marked on a board. What is the range of these integers?
Range of the data is always from the data.
The range of the data 2, –5, 4, 3, 7, 6 would change if 2 was subtracted from each value in the data.
The range of the data 3, 7, 1, –2, 2, 6, –3, –5 would change if 8 was added to each value in the data.
The following are weights (in kg) of 12 people. 70, 62, 54, 57, 62, 84, 75, 59, 62, 65, 78, 60. Find the range of the given data.
Given below are heights of 15 boys of a class measured in cm:
128, 144, 146, 143, 136, 142, 138, 129, 140, 152, 144, 140, 150, 142, 154.
Find the height of the shortest boy.
Given below are heights of 15 boys of a class measured in cm:
128, 144, 146, 143, 136, 142, 138, 129, 140, 152, 144, 140, 150, 142, 154.
Find the range of the given data.
