किरण प्रकाशिकी एवं प्रकाशिक यंत्र | Class 12 NCERT भौतिक विज्ञान | 10 AM Class By Shubham Sir | L18

Draw a histogram to represent the following information : Scale : X-axis : 1 cm = Rs. 2, Y-axis : 1 cm = 5 MF {:("Class Nav (Rs.)",10-12,12-14,14-16,16-18),("Number of MF"," "40," "30," "25," "20):}

The marks obtained (out of 20) by 30 students of a class in a test are as follows: 14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14, 19, 20, 7, 10, 13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20. Prepare a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4-8 (excluding 8 and including 4).

Form a grouped frequency distribution from the following data by inclusive method taking 4 as the class size of class intervals. 31, 23, 19, 29, 22, 20, 16, 10, 13, 34, 38, 33, 28, 21, 15, 18, 36, 24, 18, 15, 12, 30, 27, 23, 20, 17, 14, 32, 26, 25, 18, 29, 24, 19, 16, 11, 22, 15, 17,10