Cumulative Frequency

IMPORTANT

Cumulative Frequency: Overview

This topic covers concepts, such as, Class Intervals for Grouped Data, Class Marks for Grouped Data, Relation between Histogram and Frequency Polygon & Drawing a Frequency Polygon etc.

Important Questions on Cumulative Frequency

HARD
IMPORTANT

Which one of the following more than type O-give is correct for the below-given data?

Class Interval Frequency (fi)
10-20 2
20-30 5
30-40 7
40-50 8
50-60 10

 

HARD
IMPORTANT

Which one of the following statement is true about 'Range' as a method of finding the dispersion of data?

HARD
IMPORTANT

Which of the statements is correct for Ogive given below?

Question Image

HARD
IMPORTANT

Which one of the following less than type Ogive is correct for the below-given data?

Class Interval Frequency (fi)
10-20 2
20-30 5
30-40 7
40-50 8
50-60 10

 

HARD
IMPORTANT

Which of the following statements is correct regarding the cumulative frequency curve of less than type and more than type?

EASY
IMPORTANT

Which measure of dispersion is most affected by extreme values?

MEDIUM
IMPORTANT

Which one of the following statement is incorrect about 'Range' as a method of finding the dispersion of data?

MEDIUM
IMPORTANT

Which one of the following statement is true about 'Range' as a method of finding the dispersion of data?

MEDIUM
IMPORTANT

The given table represents the exports ( incrores) of four items A, B, C and D over a period of six years. Study the table and answer the question that follows:

Items  A B C D
Years
2010 240 128 180 214
2011 250 134 244 282
2012 225 138 230 247
2013 370 169 340 224
2014 425 182 300 309
2015 400 209 306 275

The total exports of item A from 2012 to 2014 is what percentage less than the total exports of all the four items in 2015:(Correct to one decimal place)

MEDIUM
IMPORTANT

The given table represents the exports (in ₹ crores) of four items A, B, C and D over a period of six years. Study the table and answer the question that follows.

Items 

Year

A B C D
2010 240 128 180 214
2011 250 134 244 282
2012 225 138 230 247
2013 370 169 300 309
2014 425 182 300 275
2015 400 209 306 275

In which year, the exports of item D were 1.4 times the average exports of item B during six years;

EASY
IMPORTANT

The following table gives the frequency of vowels used in the page of a book.

Vowels a o
Frequency  75 125 80 70 75
 
As per the given data, which vowels occur less than 80  times?

EASY
IMPORTANT

The heights of 50 girls of Class X of a school are recorded as follows.

 Height (in  cm) 135-140140-145145-150150-155155-160160-165 Number  of girls 58912142

A 'more than type' ogive for the above data is 

Question Image

The median is 

EASY
IMPORTANT

In the 'less than' type of ogive  the cumulative frequency is plotted against

EASY
IMPORTANT

The heights of a group of people is recorded in inclusive classes:

Class Interval

(Height in Centimetre)

141-150 151-160 161-170 171-180 Total
Frequency 9 11 15 10 45

Which class has the highest frequency?

EASY
IMPORTANT

 The class interval of a given observation is 10 to 15, then the classmark for this interval will be

MEDIUM
IMPORTANT

The end points of the diameter of a circle are A ( 4, -1)
and B ( -2,- 5 ). The coordinates of its centre are

EASY
IMPORTANT

Which one of the following statements is correct?