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Statistics does not deals with
(a) Qualitative
(b) Quantitative
(c) Both
(d) None
Statistics does not deals with Qualitative
Statistics does not deals with Qualitative
See lessGeometric mean considered to be the best average in the construction of …
a.Index numbers
b. median
c. mode
d. quartiles
Geometric mean considered to be the best average in the construction of Index numbers
Geometric mean considered to be the best average in the construction of Index numbers
See lessStandard deviation of a series can have minimum value of —–
(a) Zero
(b) One
(c) Two
(d) Three
Standard deviation of a series can have minimum value of Zero
Standard deviation of a series can have minimum value of Zero
See less—is a measure of central tendency
(a) Mean
(b) Median
(c) Mode
(d) All these
(d) All these.
(d) All these.
See lessFind the median of given observation 5, 6, 11, 23, 4, 8, 20, 2
1. 1
2. 7
3. 8
4. 4
Correct Answer - Option 2 : 7Concept:Median: It is the middle value in the given set, while the set is either in increasing or decreasing order.If the number of observation (n) is odd then median is (n+1)/2th term.If the number of observation (n) is even then the median is average of nth and (n+1)thRead more
Correct Answer – Option 2 : 7
Concept:
Median: It is the middle value in the given set, while the set is either in increasing or decreasing order.
If the number of observation (n) is odd then median is (n+1)/2th term.
If the number of observation (n) is even then the median is average of nth and (n+1)th term.
Calculation:
Given observation are 5, 6, 11, 23, 4, 8, 20, 2
Increasing order of given data: 2, 4, 5, 6, 8, 11, 20, 23.
The number of observation is even. (n = 8)
So, the median is theaverage of nth and (n+1)th term or average of 4th and 5th term
Median \(= \frac{6+8}{2}\)
= 7
See lessIn a frequency distribution, if the mean and median are 10 and 9 respectively, then its mode is approximately
1. 11.5
2. 12
3. 7
4. 6
Correct Answer - Option 3 : 7CONCEPT:Relationship between Mean, Median and mode:Mode = 3 Median – 2 MeanCALCULATION:Given: In a frequency distribution, the mean and median are 10 and 9 respectivelyAs we know that, Mode = 3 Median – 2 Mean⇒ Mode = (3 × 9) - (2 × 10) = 7Hence, option C is the correctRead more
Correct Answer – Option 3 : 7
CONCEPT:
Relationship between Mean, Median and mode:
Mode = 3 Median – 2 Mean
CALCULATION:
Given: In a frequency distribution, the mean and median are 10 and 9 respectively
As we know that, Mode = 3 Median – 2 Mean
⇒ Mode = (3 × 9) – (2 × 10) = 7
Hence, option C is the correct answer.
See lessWhen the measure of kurtosis is greater than —- the distribution is leptokurtic
(a) 0
(b) 1
(c) 2
(d) 3
When the measure of kurtosis is greater than 0 the distribution is leptokurtic
When the measure of kurtosis is greater than 0 the distribution is leptokurtic
See less— is defined as the reciprocal of the mean of the reciprocal of these value
(a)H.M
(b)G.M
(c)A.M
(d)S.D
H.M is defined as the reciprocal of the mean of the reciprocal of these values
H.M is defined as the reciprocal of the mean of the reciprocal of these values
See less— is a measure of peakedness
(a) Skewness
(b) Kurtosis
(c) Range
(d) Variance
Kurtosis is a measure of peakedness
Kurtosis is a measure of peakedness
See lessAccording to —- method original data are plotted on graph
(a) Free hand curve
b) Semi average
(c) moving average
(d) Least square
According to Free hand curvemethod original data are plotted on graph
According to Free hand curvemethod original data are plotted on graph
See less