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# Assumed Mean Method | Statistics | Assessment | English | Grade 10

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- 1. Multiple Choice30 seconds1 pt
For finding the mean of grouped data using the Assumed Mean Method the formula is Mean = a + [(∑f¡d¡) / ∑f¡] , d¡ is ________

d¡ = f¡x¡ ─ a

d¡ = x¡ ─ f¡

d¡ = x¡ ─ a

- 2. Multiple Choice30 seconds1 pt
If the mean of the following frequency distribution is 57.6 and the sum of the observations is 50. Find the missing frequencies x and y. Class: 0-20 20-40 40-60 60-80 80-100 100-120 Freq.(f): 7 x 12 y 8 5

x = 8, y = 10

x = 10, y = 8

x = 7, y = 11

- 3. Multiple Choice30 seconds1 pt
The marks in English of 50 students in Class X are given below. Find the mean of the marks obtained by the students in English, using the Assumed Mean method. Marks: 0 - 20 20 - 40 40-60 60-80 80-100 Freq.(f) or No. of Students: 5 10 15 15 5

50

52

80

- 4. Multiple Choice30 seconds1 pt
The daily sale of 100 vegetable vendors is given in the following table. Find the mean of the sale by assumed mean method. Daily Sales (Rs): 1000-1500 1500-2000 2000-2500 2500-3000 No. of vendors : 15 20 35 30

2150

2250

2350

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