Home
Class 10
MATHS
A survey conducted on 20 households in a...

A survey conducted on 20 households in a locality by a group of students resulted in the following frequency table for the number of family members in a household:Find the mode of this data.

A

`4`

B

`3.8`

C

`3.286`

D

None

Text Solution

Verified by Experts

The correct Answer is:
C
Maximum class frequency=8
corresponding to (3-5)
modal class=3-5
l=lower limit of modal class=3
`f_1`=8, h=2
`f_0`frequency of priceding class of modal class=8.
`f_2`=frequency of succeding class of modal class=2
Mode=`l+((f_0-f_1)/(2f_0-f_1-f_2))*h`
...
Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    NCERT ENGLISH|Exercise EXERCISE 14.4|3 Videos

  • STATISTICS

    NCERT ENGLISH|Exercise Exercise 14.3|7 Videos

  • SOME APPLICATIONS OF TRIGONOMETRY

    NCERT ENGLISH|Exercise SOLVED EXAMPLES|7 Videos

  • SURFACE AREAS AND VOLUMES

    NCERT ENGLISH|Exercise Exercise 13.3|9 Videos

Similar Questions

Explore conceptually related problems

The following table shows the frequency distribution of heights of 50 boys: Find the mode of heights

Find the mode of the following frequency table, which gives the marks scored by 40 students in a test:

Construct the frequency distribution table from the following cumulative frequency table : State the number of students in the age group 10 - 13.

A survey was conducted by a group of students as a part of their environment awareness programme, in which they collected the following data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house. Number of plants: 0-2 2-4 4-6 6-8 8-10 10-12 12-14 Number of houses: 1 2 1 5 6 2 3 Which method did you use for finding the mean, and why?

The number of students absent in a class were recorded every day for 120 days and the information is given in the following frequency table. Then mean number of students absent per day is {:("No. of student absent",0,1,2,3,4,5,6,7),("No. of days ",1,4,10,50,34,15,4,2):}

A survey reagarding the heights ( in cm) of 50 girls of class X of a school was conducted and the following data was obtained. Find the mean

To determine the mean number of children per household in a community, Tabitha surveyed 20 families at a playground. For the 20 families surveyed, the mean number of children per household was 2.4. Which of the following statements must be true?

A company selected 4000 households at random and surveyed them to find out a relationship between income level and the number of televisions sets in a home. The information, so obtained is listed in the following table. Find the probability i) of a household earning Rs 10000- Rs 14999 per year and having exactly one television. ii) of a household earning Rs 25000 and more per year owning 2 televisions. iii) of a household not having any television.

Size of agricultural holding in a survey of 200 families is given in the following table. Compute median and mode size of the holdings.

Construct the frequency distribution table from the following cumulative frequency table : State the age - group which has the least number of students .