Organizer: Department of Statistics, Pandit Deendayal Upadhyaya Adarsha Mahavidyalaya (PDUAM), Eraligool, Karimganj, Assam- on the occasion of National Statistics Day 2023
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Statistics Quiz : Click Here
Prasanta Chandra Mahalanobis was born on*
29 June 1884
29 June 1893
29 June 1894
29 June 1888
It was claimed that the average life of dry battery cells is 60 hours. A large sample of 441 cells have mean life 42 hours with a variance of 81 hours^2. Do the data ascertain the claim
*
the claim is refuted
the claim is accepted
no decision is possible
none of the above
Index numbers are expressed *
in percentages
in ratios
in terms of absolute value
all of the above
Moving average method suffers from *
the loss of information
the element of subjectivity
the decision about the number of years in groups
all of the above
Laplace distribution curve in respect to tails is*
not skewed
positively skewed
negatively skewed
not defined
An investigator reports that the arithmetic mean of two regression coefficients of a regression line is 0.7 and correlation coefficient is 0.75. Are the results :*
valid
invalid
inconclusive
none of the above
Which of the following tests is analogous to Chi-square test of goodness of fit?*
Mann-Whitney U-test
Kolmogorov-Smirnov test
Wilcoxon signed rank test
Main tools of statistical quality control are*
shewhart charts
acceptance sampling plan
both (a) and (b)
none of the above
If each value of a set is divided by a constant ‘d’, the coefficient of variation will be*
same as original value
less than original value
more than original value
none of the above
In non-parametric statistic, usually the confidence interval is found out for:*
population median
population mean
both (a) and (b)
only (b)
Local control is a device to maintain*
homogeneity among blocks
homogeneity within blocks
both (a) and (b)
only (a)
Interpolation and extrapolation are same in the sense that*
both determine most likely estimate
both results into same value
both are complementary to each other
all the above
Graphically partition values can be determined with the help of*
frequency polygon
bar diagram
line diagram
ogive curve
The lower bound for the variance of an estimator under amended regularity conditions of Cramer- Rao was given by*
R A Fisher
A Bhattacharyya
Neyman- Pearson
Aitken
Option 5
1874
1918
Chi square distribution curve with regards to bulginess is*
mesokurtic
leptokurtic
platykurtic
note defined
One of the limitations in the construction of index numbers is*
the choice of the type of average
the choice of investigators
choice of variables to be studied
all the above
Homogeneity of several variances can be tested by*
Fisher’s exact test
Bartlett’s test
F test
t test
Interpolation is not affected by*
violent fluctuations
irregular variations
unforeseen events
none of the above
If an investigator selects districts form a state, Panchayat samities from districts and farmers from panchayat samities, then such a sampling procedure is known as*
two stage sampling
stratified random sampling
cluster sampling
three stage sampling
Cyclic variations in a time series are caused by*
lockouts in a factory
war in a country
floods in the states
none of the above
Control chart consist of*
three control lines
upper and lower control limits
the level of the process
all the above
Selected units of a systematic sample are*
not easily locateable
easily locateable
not representing the whole population
all the above