CBSE  /  Class 10  /  Maths  /  Statistics

  • 1. 
    For the following distribution

  • 20 – 40
  • 40 – 60
  • 60 – 80
  • 80 -100

  • 2. 
    For the following distribution

  • 20
  • 30
  • 40
  • 50

  • 3. 
    While computing mean of grouped data, we assume that the frequencies are

  • centred at the upper limits of the classes
  • centred at the lower limits of the classes
  • centred at the classmarks of the classes
  • evenly distributed over all the classes

  • 4. 
    Which of the following can not be determined graphically?

  • Mean
  • Median
  • Mode
  • None of these

  • 5. 
    Mode is the

  • middle most frequent value
  • least frequent value
  • maximum frequent value
  • none of these

  • 6. 
    Cumulative frequency curve is also called

  • histogram
  • ogive
  • bar graph
  • median

  • 7. 
    The relationship between mean, median and mode for a moderately skewed distribution is

  • mode = median – 2 mean
  • mode = 3 median – 2 mean
  • mode = 2 median – 3 mean
  • mode = median – mean

  • 8. 
    The median of set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 2, then the median of the new set

  • is increased by 2
  • is decreased by 2
  • is two times of the original number
  • Remains the same as that of the original set.

  • 9. 
    of observations = 9

  • 10. 
    Mode and mean of a data are 12k and 15A. Median of the data is

  • 12k
  • 14k
  • 15k
  • 16k
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