Pakistani Education News Chanel

Educational News All Classes Datesheets Sholarships Jobs Results Admissions PPSC News Comments Section

Sunday, 5 May 2013

Statistics Mcqs For Lecturer & Subject Specialist Exams


Statistics Mcqs For Lecturer & Subject Specialist Exams

In statistics, conducting a survey meansA Collecting information from elements
B Making mathematical calculations
C Drawing graphs and pictures
D None of the above
Question 2
Which branch of statistics deals with the techniques that are used to organize, summarize, and present the data:A Advanced Statistics
B Probability Statistics
C Inferential Statistics
D Descriptive Statistics
E Bayesian Statistics
Question 3
In descriptive statistics, we studyA The description of decision making process
B The methods for organizing, displaying, and describing data
C How to describe the probability distribution
D None of the above
Question 4
In statistics, a population consists of:A All People living in a country
B All People living in the are under study
C All subjects or objects whose characteristics are being studied
D None of the above
Question 5
Which one of the following measurement does not divide a set of observations into equal parts?A Quartiles
B Standard Deviations
C Percentiles
D Deciles
E Median
Question 6
Which one is the not measure of dispersion.A The Range
B 50th Percentile
C Inter-Quartile Range
D Variance
Question 7
Data in the Population Census Report is:A Grouped data
B Ungrouped data
C Secondary data
D Primary data
E Arrayed data
Question 8
When data are collected in a statistical study for only a portion or subset of all elements of interest we are using:A A sample
B A Parameter
C A Population
D Both b and c
Question 9
In inferential statistics, we studyA the methods to make decisions about population based on sample results
B how to make decisions about mean, median, or mode
C how a sample is obtained from a population
D None of the above
Question 10
You asked five of your classmates about their height. On the basis of this information, you stated that the average height of all students in your university or college is 67 inches. This is an example of:A Descriptive statistics
B Inferential Statistics
C Parameter
D Population
Question 11
Statistic is a numerical quantity, which is calculated from:A Population
B Sample
C Data
D Observations
Question 12
The algebraic sum of deviations from mean is:A Maximum
B Zero
C Minimum
D Undefined
Question 13
In statistics, a sample meansA A portion of the sample
B A portion of the population
C all the items under investigation
D none of the above
Question 14
The height of a student is 60 inches. This is an example of --------------A Qualitative data
B Categorical data
C Continuous data
D Discrete data
Question 15
Which of the following is not based on all the observations?A Arithmetic Mean
B Geometric Mean
C Harmonic Mean
D Weighted Mean
E Mode
Once you are finished, click the button below. Any items you have not completed will be marked incorrect.
Get Results
There are 15 questions to complete.
Test 3
MCQs about Measure of DispersionQuestion 1
Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will beA 50
B 70
C 50/20
D 50-20=30
E 50
Question 2
Variance remains unchanged by change ofA Origin
B Scale
C Both
D None of these
Question 3
If X and Y are independent then SD (X − Y) isA SD(X)−SD(Y)
B SD(X)+SD(Y)
C SD(X)+SD(Y)














D Var(X)+Var(Y)















Question 4
The sum of squares of deviation is least if measure fromA Mean
B Mode
C Median
D Variance
Question 5
The variance of a constant isA zero
B constant
C a
D None
Question 6
The standard deviation is always _________ than mean deviationA Greater
B Less
C Equal
D None
Question 7
Lowest value of variance can beA 1
B -1
C 3
D -3
E 0
Question 8
Mean Deviation, Variance and Standard Deviation of the values 4, 4, 4, 4, 4, 4 isA 4
B 8
C 2
D 12
E 0
Question 9
The sum of squared deviations of a set of n values from their mean isA Zero
B Maximum
C Least
D None
Question 10
If Y=5X+10, then mean deviation of Y isA 5 mean deviation (X)
B 25 mean deviation (X)
C 5 mean deviation (X) + 10
D None of these
Question 11
For a symmetrical distribution approximately 68% of the cases are included between Visit Page: MCQ StatisticsA X
¯
¯
¯−S and
X
¯
¯
¯+S
B X
¯
¯
¯−2S and
X
¯
¯
¯+2S
C X
¯
¯
¯−3S and
X
¯
¯
¯+3S
D None of these
Question 12
Variance is always calculated fromA Mode
B Varaince
C Geometric Mean
D Median
E Mean
Question 13
The variance of 5 numbers is 10. If each number is divided by 2, then the variance of new numbers isA 20
B 5
C 2.5
D 5
E 0
Question 14
Standard deviation is calculated from the Harmonic Mean (HM)A Always
B Sometimes
C Never
D None of these
Question 15
The percentage of values lies between X
¯
¯
¯±2SD isA 68.26%
B 95.45%
C 99.7%
D 65%
E 99%
Question 16
The measure of dispersion is changed by a change ofA Origin
B Scale
C Algebraic Signs
D None
Question 17
The mean deviation of the values, 18, 12, 15 isA 6
B zero
C 3
D 2
Question 18
Which of these is a relative measure of dispersion http://itfeature.comA Standard Deviation
B Variance
C Coefficient of Variation
D Non of these
Question 19
If all values are same then the measure of dispersion will beA 1
B 0
C Mean
D Mode
E Median
Question 20
Var(2X+3) isA 5 Var(X)
B 4 Var(X)
C 4 Var(X)+3
D 5 Var(X) + 3
Question 21
If the standard deviation of the values 2, 4, 6, 8 is 2.33, then the standard deviation of the values 4, 6, 8, 10 isA 0
B 2.5
C 5
D 4.66
E 2.33
Question 22
If a and b are two constants, then Var(a+bX) isA a±bVar(X)
B Var(a)±Var(X)
C ±bVar(X)
D b
2±Var(X)
E (a±b)Var(X)
Question 23
If Y=−8X − 5 and SD of X is 3, then SD of Y isA 8
B 3
C 5
D 24
E None
Question 24
A measure of dispersion is always ________A zero
B Positive
C Negative
D Infinity
Question 25
The measure of Dispersion can never beA Positive
B Negative
C 0
D 1
Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will beA 50
B 70
C 50/20
D 50-20=30
E 50
Question 2
Variance remains unchanged by change ofA Origin
B Scale
C Both
D None of these
Question 3
If X and Y are independent then SD (X − Y) isA SD(X)−SD(Y)
B SD(X)+SD(Y)
C SD(X)+SD(Y)














D Var(X)+Var(Y)















Question 4
The sum of squares of deviation is least if measure fromA Mean
B Mode
C Median
D Variance
Question 5
The variance of a constant isA zero
B constant
C a
D None
Question 6
The standard deviation is always _________ than mean deviationA Greater
B Less
C Equal
D None
Question 7
Lowest value of variance can beA 1
B -1
C 3
D -3
E 0
Question 8
Mean Deviation, Variance and Standard Deviation of the values 4, 4, 4, 4, 4, 4 isA 4
B 8
C 2
D 12
E 0
Question 9
The sum of squared deviations of a set of n values from their mean isA Zero
B Maximum
C Least
D None
Question 10
If Y=5X+10, then mean deviation of Y isA 5 mean deviation (X)
B 25 mean deviation (X)
C 5 mean deviation (X) + 10
D None of these
Question 11
For a symmetrical distribution approximately 68% of the cases are included between Visit Page: MCQ StatisticsA X
¯
¯
¯−S and
X
¯
¯
¯+S
B X
¯
¯
¯−2S and
X
¯
¯
¯+2S
C X
¯
¯
¯−3S and
X
¯
¯
¯+3S
D None of these
Question 12
Variance is always calculated fromA Mode
B Varaince
C Geometric Mean
D Median
E Mean
Question 13
The variance of 5 numbers is 10. If each number is divided by 2, then the variance of new numbers isA 20
B 5
C 2.5
D 5
E 0
Question 14
Standard deviation is calculated from the Harmonic Mean (HM)A Always
B Sometimes
C Never
D None of these
Question 15
The percentage of values lies between X
¯
¯
¯±2SD isA 68.26%
B 95.45%
C 99.7%
D 65%
E 99%
Question 16
The measure of dispersion is changed by a change ofA Origin
B Scale
C Algebraic Signs
D None
Question 17
The mean deviation of the values, 18, 12, 15 isA 6
B zero
C 3
D 2
Question 18
Which of these is a relative measure of dispersion http://itfeature.comA Standard Deviation
B Variance
C Coefficient of Variation
D Non of these
Question 19
If all values are same then the measure of dispersion will beA 1
B 0
C Mean
D Mode
E Median
Question 20
Var(2X+3) isA 5 Var(X)
B 4 Var(X)
C 4 Var(X)+3
D 5 Var(X) + 3
Question 21
If the standard deviation of the values 2, 4, 6, 8 is 2.33, then the standard deviation of the values 4, 6, 8, 10 isA 0
B 2.5
C 5
D 4.66
E 2.33
Question 22
If a and b are two constants, then Var(a+bX) isA a±bVar(X)
B Var(a)±Var(X)
C ±bVar(X)
D b
2±Var(X)
E (a±b)Var(X)
Question 23
If Y=−8X − 5 and SD of X is 3, then SD of Y isA 8
B 3
C 5
D 24
E None
Question 24
A measure of dispersion is always ________A zero
B Positive
C Negative
D Infinity
Question 25
The measure of Dispersion can never beA Positive
B Negative
C 0
D 1

Statistics Mcqs For Lecturer & Subject Specialist Exams

Reactions:

0 comments:

Post a Comment