MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Standard Deviation

If 25

Question

If 25% of the observations in a frequency distribution are less than $20$ and 25% are more than $40$ , then the quartile deviation is

A

20

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

30

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

40

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

10

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D 10
Here $Q_{1} = 20, Q_{3} = 40$
Hence quartile deviation of the given frequency distribution is $= \frac{1}{2} (Q_{3} - Q_{1}) = 10$

Suggest Corrections

thumbs-up

0

Similar questions

Q. In distribution

25 %

of the observations are less than

46

25 %

of the observations are more than

54

. The quartile deviation of the distribution is _______.

Q. In which quartile,

75 %

of observations are less than

Q_{3}

25 %

Q. Calculate coefficient of quartile deviation from the following data:

X (Less than)	200	300	400	500	600
Frequency	8	20	40	46	50

Q. Using the data, given below, construct a frequency distribution table:

9, 17, 12, 20, 9, 18, 25, 17, 19, 9, 12, 9, 12, 18, 17, 19, 20, 25, 9

12

. Now answer the following:
How many numbers are more than

20

Q. The quartile deviation from the following observations is

10, 18, 20, 28, 15, 17, 22, 25, 29, 32, 34

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Measure of Dispersion

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Standard Deviation

Standard XII Mathematics

Join BYJU'S Learning Program

CrossIcon