Quantitative Aptitude - Statistical Description of Data
Exam Duration: 45 Mins Total Questions : 30
Statistics is applied in
- (a)
Economics
- (b)
Businessmanagement
- (c)
Commerce and industry
- (d)
All these
Nationality of a student is
- (a)
An attribute
- (b)
A continuous variable
- (c)
A discrete variable
- (d)
(a) or (c)
The colour of a flower is an example of
- (a)
An attribute
- (b)
A variable
- (c)
A discrete variable
- (d)
A continuous variable
Marks of a student is an example of
- (a)
An attribute
- (b)
A discrete variable
- (c)
A continuous variable
- (d)
(a) or (c)
In case of a rail accident, the appropriate method of data collection is by
- (a)
Personal interview
- (b)
Indirect interview
- (c)
Questionnaire method
- (d)
Direct observation method
In _______ method(s) information can be gathered by the researcher himself by contracting the interviewee.
- (a)
Personal Interview
- (b)
Telephone Interview
- (c)
Both (a) & (b)
- (d)
Indirect Oral
Some important sources of secondary data
- (a)
International and Government sources
- (b)
International and primary sources
- (c)
Private and primary sources
- (d)
Government sources
Which of the following statements is untrue for tabulation?
- (a)
Statistical analysis of data requires tabulation
- (b)
It facilitates comparison between rows and not columns
- (c)
Complicated data can be presented
- (d)
Diagrammatic representation of data requires
tabulation.
The most attractive method of data presentation is
- (a)
Tabular
- (b)
Textual
- (c)
Diagrammatic
- (d)
(a) or (b)
In order to compare two or more related series, we consider
- (a)
Multiple bar chart
- (b)
Grouped bar chart
- (c)
(a) or (b)
- (d)
(a) and (b)
Classes of equal width are generally preferred in the construction of a
- (a)
Cumulative frequency distribution
- (b)
Density
- (c)
Class distribution
- (d)
Frequency distribution
Mutually exclusive classification
- (a)
Excludes both the class limits
- (b)
Excludes the upper class limit but includes the lower class limit
- (c)
Includes the upper class limit but excludes the upper class limit
- (d)
Either (b) or (c)
Length of a class is
- (a)
The difference between the UCB and LCB of that class
- (b)
The difference between the UCL and LCL of that class
- (c)
(a) or (b)
- (d)
Both (a) and (b)
Frequencydensity is used in the construction of
- (a)
Histogram
- (b)
Ogive
- (c)
Frequency polygon
- (d)
None when the classes are of unequal width
An area diagram is
- (a)
Histogram
- (b)
Frequency polygon
- (c)
Ogive
- (d)
None
Classes are taken overlapping in
- (a)
Pie chart
- (b)
Bar chart
- (c)
Histogram
- (d)
line diagram
(Class frequency) / (Width of the class) is defined as
- (a)
Frequency density
- (b)
Frequency distribution
- (c)
Both
- (d)
None
An Ogive can be prepared in _____ different ways.
- (a)
2
- (b)
3
- (c)
4
- (d)
None
Ogive is a
- (a)
Line diagram
- (b)
Bar diagram
- (c)
Both
- (d)
None
Median of a distribution can be obtained from
- (a)
Less than type O gives
- (b)
Point of Intersection of Less than and greater than O gives
- (c)
Both a and b
- (d)
None of these
Unequal widths of classes in the frequency distribution do not cause any difficulty in the construction of
- (a)
Ogive
- (b)
Frequency polygon
- (c)
Histogram
- (d)
None
The following data relate to the income of 86 persons:
| Income in Rs | No. of persons |
| 500-999 | 15 |
| 1000-1499 | 28 |
| 1500-1999 | 36 |
| 2000-2499 | 7 |
What is the percentage of persons earning more than Rs 1500?
- (a)
50
- (b)
45
- (c)
40
- (d)
60
The class intervals in a frequency distribution are (16 - 19), (20 - 23), (24 - 27), (28 - 31) etc. the correct specificationfor the class(24 - 27) is
- (a)
24< x < 27
- (b)
24 ≤ x < 27
- (c)
24 < x ≤ 27
- (d)
24 ≤ x ≤ 27
Refer following table: Frequency distribution of weights of 16 students:
| Weight in kg (Class interval) |
No. of students (Frequency) |
| 44 - 48 | 4 |
| 49 - 53 | 5 |
| 54 - 5 | 7 |
| Total | 16 |
Find Frequency density of the second class interval
- (a)
0.80
- (b)
0.90
- (c)
1.00
- (d)
1.10
'Cumulative frequency' only refers to the
- (a)
Less than type
- (b)
More than type
- (c)
Both
- (d)
None
100 persons are divided into number of male/female and employed/un-employed it refers to
- (a)
Cardinal Data
- (b)
Ordinal Data
- (c)
Spatial Data
- (d)
Temporal Data
For the overlapping classes 0-10, 10-20, 20-30 etc., the classmark of the class 0-10 is
- (a)
5
- (b)
0
- (c)
10
- (d)
None
When one end of class is not specified, the class is called
- (a)
Closed-end class
- (b)
Open-end class
- (c)
Both
- (d)
None
In the construction of a frequency distribution, it is generally preferable to have classes of
- (a)
Equal width
- (b)
Unequal width
- (c)
Maximum
- (d)
None
Cumulative frequency distribution is a
- (a)
Graph
- (b)
Frequency
- (c)
Statistical table
- (d)
Distribution
