Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5
Banner 6
Banner 7
Banner 8
Banner 9

Q.

State whether the given frequency distribution table is true or false.


The following table gives the life-time (in days) of 100 electric bulbs of a certain brand.


Life-time (in days)

Number of bulbs

Less than 50

7

Less than 100

21

Less than 150

52

Less than 200

79

Less than 250

91

Less than 300

100


The frequency distribution table will be


Lifetime (in days)

Frequency

0-50

7

50-100

14

100-150

31

150-200

27

200-250

12

250-300

9


see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya

a

True

b

False 

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

Detailed Solution

Given that,

Life-time (in days)

Number of bulbs

Less than 50

7

Less than 100

21

Less than 150

52

Less than 200

79

Less than 250

91

Less than 300

100

We know that cumulative frequency is the sum of frequencies of all previous classes, so the frequency distribution will be:

Lifetime (in days)

Frequency

0-50

7

50-100

21-7=14

100-150

52-21=31

150-200

79-52=27

200-250

91-79=12

250-300

100-91=9

Thus, the given frequency distribution table is correct, i.e., option 1.
 
Watch 3-min video & get full concept clarity
score_test_img

courses

No courses found

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Get Expert Academic Guidance – Connect with a Counselor Today!

best study material, now at your finger tips!

  • promsvg

    live classes

  • promsvg

    progress tracking

  • promsvg

    24x7 mentored guidance

  • promsvg

    study plan analysis

download the app

gplay
mentor

Download the App

gplay
whats app icon
personalised 1:1 online tutoring