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CBSE Questions for Class 11 Commerce Applied Mathematics Descriptive Statistics Quiz 1 - MCQExams.com

To prevent frauds in multiple mortgage cases, under SARFAESI Act, 2002, one special thing has been created and made operative from 01-04-Which one is that from the following? 
  • Special Register Office at Lucknow
  • Special Central Arbitration Bureau at Lucknow
  • Central SARFAESI Tribunals at six centres
  • Central Electronic Registry
If 18i=1 (Xi8)=9 and 18i=1(xi8)2=45 , then the standard deviation of x1,x2,.....,x18 is 
  • 4/9
  • 9/4
  • 3/2
  • 2/3
If bi=1ai,na=ni=1ai,nb=ni=1b, then ni=1aibi+ni=1(aia)2=
  • ab
  • nab
  • (n+1)ab
  • nab
Tabulation of data makes the presentation of facts and figures ___________.
  • more simplified
  • more understandable
  • Both a&b
  • It is lengthy and occupies space
Two distributions each of 5 observations having veriance 4 and 5. If their arithmetic mean are 2 and 4 respectively., Find the variance of combined distribution 
  • 5/2
  • 11/2
  • 6
  • 13/2
Two sets each of 20 observations, have the same standard deviation 5. The first set has a mean 17 and the second set mean 22 then standard deviation of the combining the given two sets is
  • 4.49
  • 5.59
  • 6.49
  • 7.59
The standard deviation of a varibale x isσ. The standard devaition of the varibale ax+bc where a, b, c are constant is _____________________.
  • (ab)σ
  • |ac|σ
  • |a2c2|σ
  • (a)σ
Consider the first 10 positive integers. If we multiply each number by 1 and then add 1 to each number, the variance of the numbers so obtained is
  • 8.25
  • 6.5
  • 3.87
  • 2.87
If 25% of the items are less than 10 and 25%  are more than 40, then the coefficient of quartile deviation is
  • 30
  • 50
  • 1.2
  • 0.6
The standard deviation of 50 values of a variable x is 15; if each value of the variable is divided by (3); then the standard division of the new set of 50 values of x will be
  • 15
  • 15
  • 5
  • 5
The quartile deviation of wages is
  • 22.5
  • 25
  • 20
  • 21.2
If 9i=1(xi5)=9 and 9i=1(xi5)2=45, then the standard deviation of the 9 items x1,x2,.........x9 is
  • 4
  • 2
  • 3
  • 9
Variance can be calculated using:
  • x2n(xn)2
  • x2n((x)n)
  • x2n((x)2n)
  • x2n((x)2n)
2 weeks


85264.jpg
  • 7cm
  • 8cm
  • 9cm
  • 10cm
Marks scored by Rishi in an examination (out of 100 marks) in different subjects are shown by the bar graph given above. In which subject Rishi is best?

90012_2868f67c81264ba69674e8b5cec35b16.png
  • Physics
  • Biology
  • English
  • Computers
Quartile deviation for a frequency distribution is given by
  • Q=14(Q2Q1)
  • Q=13(Q3Q1)
  • Q=12(Q3Q1)
  • Q=(Q3Q1)
To compare the relative growth or decline of two or more series the most appropriate chart to be drawn would be 
  • line
  • bar
  • ratio
  • multiple
In a bar chart:
  • rectangles are of equal lengths
  • width of rectangles is fixed
  • rectangles are drawn with unequal shapes between them
  • width of rectangles carry important meaning
The following line graph shows the yearly sales figures for a manufacturing company. Compute the difference between the sales (in Rs. crores) in 2002 and 2006.

85248.jpg
  • 4
  • 6
  • 7
  • 10
The patient's temperature was same for two times during the period given. These two times were:

85230.png
  • 1 pm and 2 pm
  • 2 pm and 3 pm
  • 12 noon and 3 pm
  • 9 am and 10 pm
The following line graph shows the yearly sales figures for a manufacturing company. What were the sales in 2005?

85246.jpg
  • 4
  • 6
  • 7
  • 10
The following line graph shows the yearly sales figures for a manufacturing company. What were the sales (in Rs. crores) in 2002?

85240.jpg
  • 2
  • 4
  • 6
  • 8
_____  represents data that changes continuously over period of time.
  • Line graph
  • Pie graph
  • Bar graph
  • Histogram
The variance is the _______ of the standard deviation.
  • Square
  • Cube
  • Square root
  • Cube root
The following line graph shows the yearly sales figures for a manufacturing company. What were the sales (in Rs. crores) in 2006?

85241.jpg
  • 2
  • 4
  • 6
  • 8
The following line graph shows the yearly sales figures for a manufacturing company. What were the sales (in Rs. crores) in 2003?

85244.jpg
  • 6
  • 7
  • 8
  • 10
Draw a graph for the following:
Side of square (in cm)
2
3
4
5
6
Area (in cm2)
4
9
16
25
36
Is the graph linear?
  • Yes
  • No
  • Cannot be determined
  • None of these
Which of the following are types of graph which include bars?
  • Bar graph
  • Pie graph
  • Histogram
  • Line graph
Which one of the following statements is correct ?
  • Th Standard deviation for a given distribution is the square of the variance.
  • The standard deviation for a given distribution is the square root of the variance.
  • The standard deviation for a given distribution is equal to the variance.
  • The standard deviation for a given distribution is half of the variance.
The measure of dispersion is
  • M.D.
  • S.D.
  • Q.D.
  • All of these
Marks scored by Rishi in an examination (out of 100 marks) in different subjects are shown by the bar graph given below. The ratio of the highest marks to the lowest marks is

90015_a5fd4e84fffa4480b548c68c1cb88792.png
  • 4:3
  • 3:4
  • 9:16
  • 12:9
Marks scored by Rishi in an examination (out of 100 marks) in different subjects are shown by the bar graph given above. Percentage of marks obtained is around 70 in which of the following subjects.

90054_2725572375b343718d3586e366cb4d3e.png
  • Maths
  • English
  • Biology
  • Computers
If 25% of the observations in a frequency distribution are less than 20 and 25% are more than 40, then the quartile deviation is
  • 20
  • 30
  • 40
  • 10
Quartile deviation is :
  • 45σ
  • 32σ
  • 23σ
  • 54σ
The median of a symmetrical distribution, whose lower and upper quartiles are 60 and 80 respectively, is
  • 60
  • 80
  • 70
  • None of these
A graph drawn using vertical bars is called
  • bar graph
  • line graph
  • pictograph
  • pie graph
  Number represented by figure is ____, if each symbol represents 5 houses.
  • 4
  • 20
  • 5
  • 40
.
271836_03100e603db24f408bb0f8b0e61e9a99.png
  • 6
  • 10
  • 12
  • 26
Study the graph below showing the position of 3 runners, Pooja, Mayur and Hemant at two different times.
Who has run the fastest in between the 2nd and the 4th minute? 
266642_0a3a5d278ea64f368de810a3674b3a76.png
  • Pooja
  • Mayur
  • Hemant
  • Both Pooja and Hemant
On which day the bus was most crowded?
271854_ee9c48e39f4944d785f2a3657f5778c1.png
  • Friday
  • Saturday
  • Sunday
  • Monday
Which of the following statements is not correct for a bar graph?
  • All bars have different thickness
  • Distance between two consecutive bars is the same
  • The bars can touch each other
  • The thickness has no significance
The pictograph below shows the amount of money each class raised for an animal shelter
271728.jpg
  • Rs. 10
  • Rs. 40
  • Rs. 50
  • Rs. 100
The given line graph shows the growth rate of a kitten During which 2 month period the kittens weight increased the most
271575_28a545f5b1204b7695e195c84b2dfea8.png
  • 0 to 2 months
  • 2 to 4 months
  • 4 to 6 months
  • 6 to 8 months
If O represents 5 eggs then how many eggs does OOOO represent?
  • 4
  • 16
  • 20
  • 25
The population of four towns A,B,C and D as in 2011 are as follows: 
TownPopulation
A6863
B519
C12185
D1755
What is the most appropriate diagram to present the above data ?
  • Pie chart
  • Bar chart
  • Histogram
  • Line graph
Number of TV sets sold in the year 1995 is
271892_a9ff236b6a21415db15139c5d2a6e0bf.png
  • 1000
  • 500
  • 50
  • 2000
.
271985_e9e85be3ae09457aa39ca1b5658c948b.png
  • 5
  • 50
  • 6
  • 60
A graph drawn using vertical bars is called
  • Bar graph
  • Line graph
  • Pictograph
  • Pie graph
Variance of the distribution 73,77,81,85,...,113 is
  • 10
  • 160
  • 161
  • None of these
Number of TV sets sold in the year 1980 is
271892_a9ff236b6a21415db15139c5d2a6e0bf.png
  • 1000
  • 1500
  • 1250
  • 2000
0:0:2


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Practice Class 11 Commerce Applied Mathematics Quiz Questions and Answers