The class mark of the class $90-120$ is:

  • A
    $90$
  • B
    $120$
  • C
    $115$
  • D
    $105$

Explore More

Similar Questions

Find the number of observations,if the sum of some observations is $975$ and their mean is $32.5$.

The mean of $100$ observations is $50$. If one of the observations which was $50$ is replaced by $150$,the resulting mean will be:

The class mark of a frequency distribution with equal sizes of two successive classes is $72$ and $77$. Then,the width of the class is ...........

Convert the given frequency distribution into a continuous grouped frequency distribution:
Class interval Frequency
$150-153$ $7$
$154-157$ $7$
$158-161$ $15$
$162-165$ $10$
$166-169$ $5$
$170-173$ $6$

In which intervals would $153.5$ and $157.5$ be included?

The frequency distribution is given below:
Marks$0-20$$20-40$$40-60$$60-100$
Number of Students$10$$15$$20$$25$

This distribution has been represented graphically as shown in the image. Is this representation correct? Explain.

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo