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Statistics
Statistics MCQs
?
Find Correlation coefficient for X and Y values given below : X= (1,2,3,4,5) Y= {11,22,34,43,56}
0.8899
0.9989
1.0899
1.0989
?
An urn contains 10 black balls and 5 white balls. 2 balls are drawn from the urn one after other without replacement. What is the probability that b...
2/7
3/7
4/7
6/7
?
Calculate the relative variability (coefficient of variance) for the samples 60.25, 62.38, 65.32, 61.41, and 63.23 of a population
0.0301
0.0307
0.0103
0.0107
?
Calculate the relative variability (coefficient of variance) for the samples 60.25, 62.38, 65.32, 61.41, and 63.23 of a population
0.0301
0.0307
0.0103
0.0107
?
The mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient of variation?
60.4%
48.3%
35.7%
27.8%
?
The mean of a distribution is 23, the median is 24, and the mode is 25.5. It is most likely that this distribution is:
Positively Skewed
Symmetrical
Asymptotic
Negatively Skewed
?
Which of the following describe the middle part of a group of numbers?
Measure of Variability
Measure of Central Tendency
Measure of Association
Measure of Shape
?
According to the empirical rule, approximately what percent of the data should lie within µ ± σ?
95%
90%
68%
99.7%
?
The sum of the deviations about the mean is always:
Range
Zero
Total Standard Deviation
Positive
?
The middle value of an ordered array of numbers is the
Mode
Mean
Median
Mid Point
?
Which of the following is not a measure of central tendency?
Percentile
Quartile
Standard deviation
Mode
?
Which of the following divides a group of data into four subgroups?
Percentiles
Deciles
Median
Quartiles
?
If the standard deviation of a population is 9, the population variance is:
9
3
21
81
?
If a distribution is abnormally tall and peaked, then is can be said that the distribution is:
leptokurtic
pyrokurtic
platykurtic
mesokurtic
?
Sum of dots when two dice are rolled is
a discrete variable
a continuous variable
a constant
a qualitative variable
?
The weights of students in a college/school is a
Discrete Variable
Continuous Variable
Qualitative Variable
None of these
?
The number of accidents in a city during 2010 is
Discrete variable
Continuous variable
Qualitative variable
Constant
?
Which of these represent qualitative data
Height of a student
Liking or disliking of (500) persons of a product
Income of a government servant in a city
Yield from a wheat plot
?
Life of a T.V picture tube is a
Discrete variable
Continuous variable
Qualitative variable
Constant
?
The rst hand and unorganized form of data is called
Secondary data
Organized data
Primary data
None of these
?
The data which have already been collected by some one are called
Raw data
Array data
Secondary data
Fictitious data
?
The grouped data is also called
Raw data
Primary data
Secondary data
Qualitative data
?
Primary data and - data are same
Grouped
Secondary data
Ungrouped
None of these
?
Questionnaire survey method is used to collect
Secondary data
Qualitative variable
Primary data
None of these
?
Data collected by NADRA to issue computerized identity cards (CICs) are
Unofficial data
Qualitative data
Secondary data
Primary data
?
Population census is conducted through
Sample survey
Accounting
Investigation
Complete enumeration
?
A parameter is a measure which is computed from
Population data
Sample data
Test statistics
None of these
?
Given X1 = 12; X2 = 19; X3 = 10; X4 = 7, then P Xi4 =1 equals?
36
48
41
29
?
A chance variation in an observational process is
Dispersion/ Variability
Measurement error
Random error
Instrument error
?
A constant variable can take values
Zero
Fixed
Not Fixed
Nothing
