The number of wickets taken by 45 bowlers in a season is grouped as: 20-60: 7, 60-100: 5, 100-150: 16, 150-250: 12, 250-350: 2, 350-450: 3. Note the unequal class sizes. To find the mean correctly using the direct method, what xi must be used for the class 150-250?

Question

Accepted Answer

200. Even with unequal classes, the class mark is still (lower+upper)/2 = (150+250)/2 = 200. The direct method uses fi*xi with these class marks.

The number of wickets taken by 45 bowlers in a season is grouped as:
20-60: 7, 60-100: 5, 100-150: 16, 150-250: 12, 250-350: 2, 350-450: 3.
Note the unequal class sizes. To find the mean correctly using the direct method, what xi must be used for the class 150-250?

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More Class 10 Mean of Grouped Data practice

The number of wickets taken by 45 bowlers in a season is grouped as:20-60: 7, 60-100: 5, 100-150: 16, 150-250: 12, 250-350: 2, 350-450: 3.Note the unequal class sizes. To find the mean correctly using the direct method, what xi must be used for the class 150-250?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Mean of Grouped Data practice

The number of wickets taken by 45 bowlers in a season is grouped as:
20-60: 7, 60-100: 5, 100-150: 16, 150-250: 12, 250-350: 2, 350-450: 3.
Note the unequal class sizes. To find the mean correctly using the direct method, what xi must be used for the class 150-250?