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Post a LessonAnswered on 27 Feb Learn CBSE/Class 7/Maths/Data Handling
Sadika
Let us assume the heights (in cm) of 10 students of our class as :
120, 122, 125, 137, 139, 150, 142, 133, 145, 158
By observing the above-mentioned values, the highest value is = 158 cm
By observing the above-mentioned values, the lowest value is = 120 cm
The range is the difference between the highest value and the lowest value of the data. It helps in knowing the spread of the data.
Then,
Range of Heights = Highest value – Lowest value
= 158 – 120
= 38 cm
read lessAnswered on 27 Feb Learn CBSE/Class 7/Maths/Data Handling
Sadika
As per the question, we use the basic definition of parameters of statistics like mean and range to solve the problem.
The given data is as follows,
4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7
Let's tabulate the data as shown below.
(i)The highest number is 9.
(ii)The lowest number is 1.
read lessAnswered on 27 Feb Learn CBSE/Class 7/Maths/Data Handling
Sadika
We use the basic formula of average or mean to solve the problem given.
Total numbers = 5
The first five whole numbers are 0, 1, 2, 3, 4
Mean of first five whole numbers = Sum of the first 5 whole numbers / Total numbers
= (0 + 1 + 2 + 3 + 4) / 5
= 10 / 5
= 2
Thus, the mean of the first five whole numbers is 5.
read lessAnswered on 27 Feb Learn CBSE/Class 7/Maths/Data Handling
Sadika
Answered on 27 Feb Learn CBSE/Class 7/Maths/Data Handling
Sadika
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