# CBSE Class 11 Economics Averages Assignment

Read and download free pdf of CBSE Class 11 Economics Averages Assignment. Get printable school Assignments for Class 11 Economics. Standard 11 students should practise questions and answers given here for Economics in Grade 11 which will help them to strengthen their understanding of all important topics. Students should also download free pdf of Printable Worksheets for Class 11 Economics prepared as per the latest books and syllabus issued by NCERT, CBSE, KVS and do problems daily to score better marks in tests and examinations

1. Calculate mean from the following data:

Size:             10   20  30   40  50  60

Frequency:     7    8   12   15   5    3

2. The mean of 20 items was found to be 60. If the combined mean of 50 items was 48, find the mean of rest of the 30 items.

3. The mean of 50 items was found to be 100. Later on one value of 90 was found to be included as 60. Find the correct mean.

4. Calculate the mean from the following data:

Marks:        Less than 10       Less than 20     Less than 30     Less than 40

Frequency         10                       16                  24                   30

5. Calculate missing frequency if mean wages are Rs.47.2.

Weekly Wages:            40- 43    43-46     46- 49   49- 52   52- 55

Workers:                       31          58          60         x           27

Duration: 30mins Set B Class XI Test- Averages MM: 20

1. Calculate the weighted mean from the following data:

Items: 12 29 14 41

Weights: 6 4 5 2

2. The mean of 20 items was found to be 50. Later on it was found that a value of 25 was wrongly included as 35. Find the correct mean.

3. Calculate the mean from the following data:

Marks: 1-10 11-20 21-30 31-40 41-50

Frequency: 5 6 4 3 2

4. Find the missing value if the mean marks are 10.05.

5 6 7 8 12 x 15 17 18 3 10 5 10 12 15 11 13 1

5. The mean marks obtained by group of 20 students were 70. The mean mars of another group of 30 students were 80. Find the combined mean.

BHARTI PUBLIC SCHOOL

1. Calculate missing value p from the following data when the mean is 11.37.

X: 5 7 p 11 13 16 20

F: 2 4 29 54 11 8 4

2. Calculate mean of all 100 items when the mean of 40 items was found to be 25 & mean of rest of the 60 items was found to be 35.

3. Calculate mean from the following data:

Age: Below 10 10-20 20-30 30-40 40-50

No. of People: 20 19 21 25 15

4. The mean of 38 items was found to be 68. Later on it was found that two values of 56 & 64 were not included. Find the correct mean.

5. In an examination, weightage given to English was twice that of Maths & weightage given to Science was twice of Social Science. Also the weightage of Maths is twice of Social Scince. If the marks obtained in English are 70, Maths 90, Science 70 & Social Science 60, then calculate weighted mean.

BHARTI PUBLIC SCHOOL

1. Calculate mean from the following data:

X: 15 25 35 45 55

F: 3 6 4 5 2

2. Calculate the mean of 50 items when the mean of 20 items was found to be 25 & mean of rest of the 30 items was found to be 30.

3. Calculate mean from the following data:

Age: 0-15 15-20 20-30 30-40 40-60 60-80

Frequency: 10 20 15 10 25 20

4. The mean of 50 items was calculated to be 70. But two values of 65 & 86 were wrongly included as 56 & 68. Find the correct mean.

5. In a society, teacher is given twice a weightage as engineer & doctor is given twice the weightage as banker. If the monthly salary of a teacher is Rs.40000, Engineer Rs.35000, doctor Rs.50000 & banker Rs.40000, then calculate the weighted salary.

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