Class IX

Consider the marks obtained by 10 students in a maths test as given below: 40 45 35 79 50 68 77 83 47 69. The range of the given data is
  1. 85
  2. 35
  3. 48
  4. 45
If the mean of the observation x, x+3, x+5, x+7, x+10 is 9, then that value of x is
  1. 5
  2. 4
  3. 0.2
  4. 0.25
Given a class 120 - 150, the upper limit of the class is
  1. 120
  2. 150
  3. 135
  4. none of these
The height (in cm) of the 5 persons is given: 145, 166, 140, 120, 160. The median of the data is
  1. 40
  2. 45
  3. 60
  4. 120
The most frequently occurring observation in the data is known as
  1. Mean
  2. Median
  3. Median Mode
  4. none of these
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