Free download NCERT Solutions for Class 10 Maths Chapter 14 Exercise 14.4 statistics in English Medium and Hindi Medium PDF form. Solutions for class x other subjects download free. The other Exercises of this chapter like Exercise 14.1 or Exercise 14.2 or Exercise 14.3 are here to use it online.

## NCERT Solutions for Class 10 Maths Chapter 14 Exercise 14.4

If you need solutions in Hindi, Click for Hindi Medium solutions of 10 Maths Exercise 14.4

### Class 10 Maths Exercise 14.4 Solutions in Hindi Medium

To get the solutions in English, Click for English Medium solutions.

##### Class 10 Maths – Statistics

###### Cumulative frequency curve or an ogive

- (i) Ogive is the graphical representation of the cumulative frequency distribution.
- (ii) Less than type Ogive:
- (a) Construct a cumulative frequency table.
- (b) Mark the upper class limit on the x-axis.

- (iii) More than type Ogive:
- (a) Construct a frequency table.
- (b) Mark the lower class limit on the x-axis.

- (iv) To obtain the median of frequency distribution from the graph:

###### Mode = 3 median – 2 mean

#### Practice Questions form Board Papers

- If the mode of the given data is 340. Find the missing frequency x for the following data.
- Class 0-100 100-200 200-300 300-400 400-500 500-600
- Frequency 8 12 x 20 14 7 [Answer: x = 16]

- What is the class mark of a class a – b. [Answer: (a+b)/2]
- Find the mean of all the even numbers between 11 and 21.
- The mean of 50 observations is 20. If each observation is multiplied by 3, then what will be the new mean?
- The mean of 10 observations is 15.3. If two observations 6 and 9 are replaced by 8 and 14 respectively. Find the new mean.
- Find the mode:
- Marks less than 20 less than 40 less than 60 less than 80 less than 100
- No. of Students 4 10 28 36 50

- Find the missing frequency, if the mode is given to be 58.
- Age (in Years). 20-30 30-40 40-50 50-60 60-70 70-80
- No. of Patients 5 13 x 20 18 19

- The mean of the following frequency distribution is 57.6 and the number of observations is 50. Find the missing frequencies f1 and f2.
- Class 0-20 20-40 40-60 60-80 80-100 100-120
- Frequency 7 f1 12 f2 8 5

- Following is the age distribution of cardiac patients admitted during a month in a hospital:
- Age (in Yrs.) 20-30 30-40 40-50 50-60 60-70 70-80
- No. of Patients 2 8 15 12 10 5

Draw a ‘less than type’ and ‘more than type’ ogives and from the curves, find the median.