Answer
Arranging the data in ascending or increasing order, we get
1250 |
1304 |
1445 |
1474 |
1482 |
1520 |
1573 |
1580 |
1597 |
1620 |
1632 |
1719 |
1775 |
1801 |
1819 |
1824 |
1955 |
2020 |
2084 |
2300 |
Now, we need to calculate the class width to make the required frequency table
We know that class width = (highest value - lowest value)/(number of classes)
highest value is 2300 and lowest value is 1250 and number of classes = 8
so, we get
Class width = (2300-1250)/8 = 131.25 or 132(rounded to next whole number)
So, we can write classes as
1250 to 1250+132 =1250 to 1382
Similarly, we can keep on adding 132 till 8th row
so, it becomes
Class | Frequency |
1250 - 1382 | |
1382 - 1514 | |
1514 - 1646 | |
1646 - 1778 | |
1778 - 1910 | |
1910 - 2042 | |
2042 - 2174 | |
2174 - 2306 |
Now, we have to count number of data values which falls within specific class.
So, the above table becomes
Class | Frequency |
1250 - 1382 | 2 |
1382 - 1514 | 3 |
1514 - 1646 | 6 |
1646 - 1778 | 2 |
1778 - 1910 | 3 |
1910 - 2042 | 2 |
2042 - 2174 | 1 |
2174 - 2306 | 1 |
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