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CBSE Questions for Class 11 Commerce Applied Mathematics Descriptive Statistics Quiz 4 - MCQExams.com

Which of the following is true?
  • Quartile Deviation can generally be calculated for open-ended distributions
  • It is unduly affected by extreme values
  • Both A and B
  • None of these
If 1,2,3,4,5,6,7 are numbers then Q1 and Q2 are respectively
  • 2,4
  • 2.6
  • 4,6
  • 3,5
If the median of the data 6,7,x2,x,18,21 written in ascending order is 16, then the variance of the data is
  • 3015
  • 3113
  • 3212
  • 3313
Statistics studies _________ information.
  • qualitative
  • quantitative
  • isolated
  • nominal
Quartile Deviation = 
  • Half of the Inter-Quartile Range
  • [ Q(3) - Q(1) ] / 2
  • Both A and B
  • Q(3) - Q(1)
Inter Quartile Range =
  • Difference between the upper and lower quartiles
  • Q(3) - Q(1)
  • Both A and B
  • Q(2)-Q(1)
Days when the forecast temperature the same as the actual temperature are:

85289.jpg
  • Tuesday, Wednesday and Thursday
  • Tuesday, Friday and Sunday
  • Thursday, Friday and Saturday
  • Tuesday, Thursday and Monday
When you are presenting a series of numbers in a business document, you should use a __________.
  • line graph
  • table
  • pie chart
  • bar chart
Fill the alternative given in the bracket:
Systematic arrangement of data in table and row is called _________.
  • tabulation
  • graph
  • caption
  • pie chart
Which of the following is true with respect to range?
  • Higher value of Range implies higher dispersion and vice-versa
  • Range is unduly affected by extreme values.
  • It is not based on all the values.
  • All of these
The arithmetic mean of the observations 10,8,5,a,b is 6 and their variance is 6.8, then ab=
  • 6
  • 4
  • 3
  • 12
The headings of the rows given in the first column of a table are called ________.
  • stubs
  • captions
  • sub titles
  • prefatory notes

 Study the following graph carefully to answer these questions.
Production (in lakh tonnes) of six units of a company in 2006 and 2007.
What is the total production of units C, D and E together for both the years? (In lakh tonnes)


904805_06a2dba234734080bb01aa21f667fd1d.png
  • 495
  • 595
  • 545
  • 515
The mean and standard deviation of random variable X are 10 and 5 respectively, then E(X155)2= _______.
  • 4
  • 3
  • 2
  • 5
Which of the following is not two-dimensional diagram? 
  • Pie-chart
  • Multiple bar diagram
  • Rectangular diagram
  • Square diagram
The following series is of the type of
YearPopulation in a particular city
199519,00,000
199619,20,000
199725,00,000
199825,50,000
  • individual series
  • geographical
  • discrete series
  • time series
In tabulation, the source of the data, if any, is shown in the ________.
  • footnotes
  • body
  • stub
  • caption
What percentage of values is less than 4th decile?
  • 50%
  • 70%
  • 40%
  • None of the above
Choose the correct answer from the alternatives given.
Directions for questions 71 to 75: Study the graph and answer the questions.
What was the approximate percent increase in sales of Cool-sip in 1990 over its sales in 1989? 
901414_519f855db2cb4bd8a543d2c230f31dfa.png
  • 200
  • 50
  • 171
  • 300
In an ordered series, the data are ________.
  • in descending order
  • in ascending order
  • either (1) or (b)
  • neither (a) nor (b)
The following series is of the type of 
PersonAge(in years)
A35
B23
C26
D32
E30
  • Individual
  • Discreate
  • Geographical
  • Times series
Maximum number of teachers are in between which age group?
1063701_98950b2e53ed46868c813af371983b8e.png
  • 4550
  • 2530
  • 4045
  • 3035
Which of the following statements is untrue for tabulation?
  • Statistical analysis of data requires tabulation
  • It facilitates comparison between rows and not columns
  • Complicated data can be presented
  • Diagrammatic representation of data requires tabulation
Consider the following statements:
I. In a bar graph not only height but also width of each rectangle matters.
II. In a bar graph height of each rectangle matters and not its width
III. In a histogram the height as well as the width of each rectangle matters
IV. A bar graph is two dimensional
Of these statements:
  • I alone is correct
  • III alone is correct
  • II and III are correct
  • I and IV are correct
If 18i=1(xi8)=9 and 18i=1(xi8)2=45, then standard deviation of x1,x2,...,x18 is
  • 49
  • 94
  • 32
  • 34
The horizontal line in a bar graph is called:
  • x-axis
  • y-axis
  • Imaginary axis
  • None of these
If 9r=1(x15)=9 and 9r=1(x15)2=45 then the standard deviation of the 9 items x1,x2....x9 is:
  • 3
  • 9
  • 4
  • 2
Coefficient of skewnwss for the value Median=18.8,Q1=14.6,Q3=25.2 is
  • 0.2
  • 0.5
  • 0.7
  • None
The mean and standard deviation of a random variable x is given by 5 and 3 respectively. The standard deviation of 23x is _____
  • 7
  • 81
  • 34
  • 9
Solve:
log5(25)4625
  • 4
  • 5
  • 6
  • 7
Use the graph to answer the question.How many students have more than 100 rupees? 
1194846_57495bfdff2f4910832c713e5db5f073.png
  • 7
  • 6
  • 100
  • 8
The variance of the data 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 is
  • 15
  • 20
  • 30
  • 33

If the sum of squares of deviations of 15 observations from their mean 20 is 240, then what is the value of coefficient of variation (CV)?

  • 20
  • 21
  • 22.36
  • 24.70
If V is the variance and M is the mean of first 15 natural numbers, then what is V+M2 equal to ?
  • 1243
  • 1483
  • 2483
  • 1249
A graph that displays data that changes continuously over periods of time is
  • Bar graph
  • pie chart
  • Histogram
  • Line graph
State whether the following statements are true (T) or false (F):
In a bar graph, width of a bar has no significance. It is only for eye attraction.
  • True
  • False
State whether the following statements are true (T) or false (F):
In a bar graph, bars can be drawn either vertically or horizontally.
  • True
  • False
Observe the following pictograph which shows the number of ice cream cones sold by school canteen during a week. Chose the correct answer from the given options:
The maximum number of ice cream cones were sold on:
1800503_be590c93092643e5ba2b3e094834f42a.png
  • Tuesday
  • Friday
  • Wednesday
  • Thursday
Study the graph carefully and answer the questions given below it. What is the total wheat import during all the given years (in thousand tonnes)?
313165_593e2b3c253c44559e3dcf4bc3fc4788.png
  • 27420
  • 28240
  • 29240
  • 28420
Observe the following pictograph which shows the number of ice cream cones sold by school canteen during a week. Chose the correct answer from the given options:
The minimum number of ice cream cones were sold on:
1800502_dc9b97181fe4426db48309daf1936aa2.png
  • Monday
  • Saturday
  • Tuesday
  • Thursday
To get an interest of Rs 280 per year, how much money should be deposited?
  • 2500
  • 3000
  • 3500
  • 400
Use the graph to find the interest on Rs 2500 for a year.
  • Rs.100
  • Rs.200
  • Rs.300
  • Rs.400
The frequency distribution has been represented graphically as follows: 
marks
020
2040
4060
60100
No of students
10
15
20
25
Do you think this representation is correct or incorrect? 

78296_a38a172478114d7b9899d97918a97f7b.png
  • Correct
  • Incorrect
  • Ambiguous
  • Data insufficient
During which periods did the patient's temperature showed an upward trend?


85230.png
  • 9 a.m. to 10 a.m., 10 a.m. to 11 a.m., 2 p.m. to 3 p.m.
  • 9 a.m. to 10 a.m., 10.30 a.m. to 11.30 a.m., 2 p.m. to 3 p.m.
  • 9 a.m. to 10 a.m., 10 a.m. to 11.30 a.m., 1 p.m. to 2 p.m.
  • 9 a.m. to 10 a.m., 10 a.m. to 11 a.m., 1 p.m. to 2 p.m.
When was the patients temperature 38.5 C?


85230.png
  • 9
  • 10
  • 11
  • 12
The patients temperature at 1 p.m. is:

85230.png
  • 37.0 C
  • 39.5 C
  • 36.5 C
  • 36.0 C
How much distance did the car cover during the period 7.30 a.m. to 8 a.m?
  • 20 km
  • 40 km
  • 80 km
  • 100 km
Draw a graph for the given information with suitable scales on the axes and answer the following question.
The time when the car had covered a distance of 100 km since its start is:
  •  7:00 am
  •  7:30 am
  • 8:00 am
  •  8:30 am
Draw a graph for the following:
Side of square (in cm)
2
3
3.5
5
6
Perimeter (in cm)
8
12
14
20
24
State the typre of graph.
  • Linear graph
  • Bar graph
  • Pie graph
  • None of these
During which week did Plant B grow least?


85281_c533cc2bde314ea0bfc02b98b89253a2.png
  • 1st week
  • 2nd week
  • 3rd week
  • None of these
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Practice Class 11 Commerce Applied Mathematics Quiz Questions and Answers