The fractions of a school's monthly budget (in lakhs of Rs) spent across 6 months is grouped, with class marks 2, 4, 6, 8 and frequencies 1, 2, 2, 1. Using the step-deviation method with a = 6 and h = 2, find the mean spend (in lakhs of Rs).

Question

Accepted Answer

5. ui = (xi-6)/2 = -2,-1,0,1. fi*ui = 1*-2+2*-1+2*0+1*1 = -2-2+0+1 = -3. sum fi = 6. Mean = 6 + 2*-3/6 = 6 - 1 = 5.

The fractions of a school's monthly budget (in lakhs of Rs) spent across 6 months is grouped, with class marks 2, 4, 6, 8 and frequencies 1, 2, 2, 1.
Using the step-deviation method with a = 6 and h = 2, find the mean spend (in lakhs of Rs).

Step-by-Step Solution

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More Class 10 Mean of Grouped Data practice

The fractions of a school's monthly budget (in lakhs of Rs) spent across 6 months is grouped, with class marks 2, 4, 6, 8 and frequencies 1, 2, 2, 1.Using the step-deviation method with a = 6 and h = 2, find the mean spend (in lakhs of Rs).

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Mean of Grouped Data practice

The fractions of a school's monthly budget (in lakhs of Rs) spent across 6 months is grouped, with class marks 2, 4, 6, 8 and frequencies 1, 2, 2, 1.
Using the step-deviation method with a = 6 and h = 2, find the mean spend (in lakhs of Rs).