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CBSE Questions for Class 11 Commerce Economics Measures Of Central Tendency Quiz 4 - MCQExams.com

The value of ni=1(x1ˉx) where ˉx is the arith metic mean of xi is
  • 1
  • 0
  • nˉx
  • none of these
In the data set below, what is the upper quartile?
1,2,4,2,5,6,7
  • 2
  • 7
  • 6
  • 4

From the following data:7,3,4,5,7,7,7,3,2,1,8,2. Find the mode.

  • 3
  • 7
  • 2
  • 5
Find the weighted mean of marks obtained by a student in certain examination if he has secured 75,80,67,90 marks in English, Tamil, Mathematics, social Science respectively, having corresponding weights 3,2,2,1.
  • 75.16
  • 76.12
  • 62.17
  • 78.12
The median of the following data 36,74,77,31,68,76,34,80,64,32,82 is-
  • 68
  • 34
  • 67
  • 76
 Marks 10-20 20-30 30-40 40-50 50-60
 Frequency 4 10 20 40 50
The following frequency distribution shows the marks obtained by 124 students in Economy at a certain school. Find the arithmetic mean using the direct method.
  • 50 marks
  • 80 marks
  • 30 marks
  • 45 marks
During the first period in the class, Elsa's math quiz scores were 90,92,93,88,95,88,97,87 and 98. What was the median quiz score?
  • 90
  • 91
  • 88
  • 92
The daily earnings (in rupees) of 10 workers in a factory are 6,14,17,6,14,17,14,6,17,14.
The median wage is-
  • Rs.6
  • Rs.14
  • Rs.15
  • Rs.17
Find the mode of the following data
58,35,54,32,54,58,34,35,35,32,58,35,35,89,58,32,32,89.
  • 35
  • 58
  • 32
  • 89
Choose the formula used for arithmetic mean of grouped data by Assumed mean method is
  • ˉx=Afdf
  • ˉx=A+fdf
  • ˉx=A×fdf
  • ˉx=A/fdf
In a moderately a symmetrical distribution- The mean and mode are 50 and 37.5 respectively, find median.
  • 45.50
  • 45.86
  • 52.5
  • 52.86
Identify in which ideal measure of central tendency used to find the middle value, if the data are ordinal?
  • mean
  • median
  • mode
  • range
Which ideal measure of central tendency used to find the middle value, if the data are categorical?
  • mean
  • median
  • mode
  • range
In the data set below, what is the lower quartile?
1,2,4,2,5,6,7
  • 1
  • 2
  • 4
  • 5
Find the first quartiles for the following data.
8,11,20,10,2,17,15,5,16,15,25,6,5
  • 2
  • 6
  • 8
  • 5
The lower quartile is the value of the middle of the first set, where 25% of the values are _____ than Q1 and 75% are larger.
  • longer
  • larger
  • smaller
  • higher
The ______ is the median of of the lower half of the data set.
  • quartile
  • upper quartile
  • range
  • lower quartile
In which quartile, 75% of observations are less than Q3 and 25% are larger?
  • lower
  • upper
  • middle
  • Q3
______ is called as half of the difference between upper and lower quartiles.
  • Standard deviation
  • Mean deviation
  • Quartile deviation
  • Interquartile range
The notation used for second quartile is
  • Q3
  • Q1
  • Q2
  • Q4
Which type of variable is best to measure the central tendency of median?
  • nominal
  • ratio
  • interval
  • ordinal
What is the best measure of central tendency for the given diagram?

464166.PNG
  • mode
  • mean
  • median
  • range
In which distribution, measure of central tendency is equal?
  • left skew
  • right skew
  • normal
  • all the above
Find the average of the expressions 2x+4,5x1 and x+3.
  • x+2
  • x2
  • 2x+2
  • 2x2
12n,12,12+n
What is the average (arithmetic mean) of the 3 quantities in the list above?
  • 4
  • 12
  • 18
  • 4+n3
  • 12+n3
The mean of a,b,c,d and e is 28. If the mean of a,c and e is 24, what is the mean of b and d?
  • 31
  • 32
  • 33
  • 34
If the median of x3,x2,x4,2x9 and x is 5, find the value of x.
  • 10
  • 15
  • 20
  • 25
In which two measure of central tendency do not affect the outliers?
  • median and mean
  • mean and mode
  • median and mode
  • mode and range
Determine which type of variable is best to measure the central tendency of mode?
  • nominal
  • ratio
  • interval
  • ordinal
What is the best measure of central tendency for the following diagram?

464164.PNG
  • mode
  • mean
  • median
  • range
0:0:1


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