CBSE Important Questions

Mathmatics Class X

Q. 1. If mode of the following data is 15, find k.
10, 15, 17, 15,, 17, 20.

Q. 2. The following table shows the marks obtained by 100 students of class X in a school during a particular academic session. Find the mean, median and mode of the distribution.

Marks No. of students
Less than 10 7
Less than 20 21
Less than 30 34
Less than 40 46
Less than 50 66
Less than 60 77
Less than 70 92
Less than 80 100

 

Q. 3. Using step deviation method, find the mean of the following data:

Weight(in Kg) 25 - 31 31 - 37 37 - 43 43 - 49 49 - 55 55 - 61
No.of students 10 6 8 12 5 9

 

Q. 4. Draw a less than ogive for the following data and estimate the median from it.

C.I. 10 - 20 20 - 30 30 - 40 40 - 50 50 - 60 60 - 70 70 - 80 80 - 90 90 - 100
Frequency 5 14 19 27 43 29 16 12 5

 

Q. 5. The annual profit earned by 30 shops of a shopping complex in a locality give rise to the following distribution:

Profit (in lakhs Rs) Number of Shops (frequency)
More than or equal to 5 30
More than or equal to 10 28
More than or equal to 15 16
More than or equal to 20 14
More than or equal to 25 10
More than or equal to 30 7
More than or equal to 35 3

Draw both ogives for the above data and obtain the median profit.

Paper By: Mr. Manoj Rajurkar
Email Id: [email protected]
Ph No. :919425354446