MEDIUM
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Which of the following continents has the highest population density as of 2020?

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Important Questions on The World Population

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To draw “Less than” ogive we take ___ on x-axis: 
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Which one of the following is the largest island in Asia?
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X-coordinate of intersecting point of two ogives, represents

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As the number of observations and classes increases, the shape of a frequency polygon
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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;

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The following pairs relate to frequency distribution of a discrete variable and its frequency polygon. Which one of the following pairs is not correctly matched?
EASY

In " less than type ogive'', the x-axis represents

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In the context of Amniocentesis, which of the following statement is incorrect?
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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)

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If 65 is the range of the ungrouped data 50, 70, 60, B, 20, 40 then the absolute difference of the possible values of B is
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No. of Accidents 0 1 2 3 4 5 6 7
Frequency 36 27 33 29 24 27 18 9

In how many cases 4 or more accidents occur ?

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The range of the observations 20,28,40,12,30,15,50 is _____
MEDIUM
The difference between upper limit and lower limit of a class is called:
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The width of the class 55.5-60.5 is ___
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Types of cumulative frequencies are ___________
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Amniocentesis is a diagnostic procedure to detect
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The following factors indicate improved reproductive health of society. Choose the correct option.

1. Better detection and cure of disease

2. Better post-natal care

3. Medically assisted deliveries

4. Increased MMR

Select the code for the correct answer from the options given below:

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Class 0-10 10-20 20-30 30-40 40-50
Frequency 7 15 13 17 10

The cumulative frequency of the class 20-30 of the above frequency distribution is _____.

 

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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?
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Find the least positive value of k, if the range of 15,14, k, 25,30,35 is 23.