Consider the marks obtained by $10$ students in a mathematics test as given below:
$55, 36, 95, 73, 60, 42, 25, 78, 75, 62$
$55, 36, 95, 73, 60, 42, 25, 78, 75, 62$
(N/A) The data in this form is called raw data.
By looking at it in this form,can you find the highest and the lowest marks?
Did it take you some time to search for the maximum and minimum scores? It would be less time-consuming if these scores were arranged in ascending or descending order. So,let us arrange the marks in ascending order as:
$25, 36, 42, 55, 60, 62, 73, 75, 78, 95$
Now,we can clearly see that the lowest marks are $25$ and the highest marks are $95$.
The difference between the highest and the lowest values in the data is called the range of the data. So,the range in this case is $95 - 25 = 70$.
Presentation of data in ascending or descending order can be quite time-consuming,particularly when the number of observations in an experiment is large.
By looking at it in this form,can you find the highest and the lowest marks?
Did it take you some time to search for the maximum and minimum scores? It would be less time-consuming if these scores were arranged in ascending or descending order. So,let us arrange the marks in ascending order as:
$25, 36, 42, 55, 60, 62, 73, 75, 78, 95$
Now,we can clearly see that the lowest marks are $25$ and the highest marks are $95$.
The difference between the highest and the lowest values in the data is called the range of the data. So,the range in this case is $95 - 25 = 70$.
Presentation of data in ascending or descending order can be quite time-consuming,particularly when the number of observations in an experiment is large.
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$17, 2, 7, 27, 15, 5, 14, 8, 10, 24, 48, 10, 8, 7, 18, 28$
Find the median of the points scored by the team.
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| Cost of living index | Number of weeks |
| $140-150$ | $5$ |
| $150-160$ | $10$ |
| $160-170$ | $20$ |
| $170-180$ | $9$ |
| $180-190$ | $6$ |
| $190-200$ | $2$ |
| Total | $52$ |
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$\begin{array}{llllll}0.03 & 0.08 & 0.08 & 0.09 & 0.04 & 0.17 \\ 0.16 & 0.05 & 0.02 & 0.06 & 0.18 & 0.20 \\ 0.11 & 0.08 & 0.12 & 0.13 & 0.22 & 0.07 \\ 0.08 & 0.01 & 0.10 & 0.06 & 0.09 & 0.18 \\ 0.11 & 0.07 & 0.05 & 0.07 & 0.01 & 0.04\end{array}$
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