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Question

Consider the following for the next two (02) items that follow:

The frequency distribution of marks obtained by students in an English examination is given below:
 

Marks obtainedNumber of Students
Below 4050
Below 50125
Below 60210
Below 70315
Below 80350

What is the number of students who scored between 60 and 70 marks?

This question was previously asked in
CDS 2 2025 Maths Question Paper (14-Sep-2025)
The correct answer is

105

The number of students who scored between 60 and 70 marks is calculated by subtracting the cumulative number of students who scored below 70 from those who scored below 60:

315 - 210 = 105 students. Hence, the correct answer is (a) 105.

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Important Questions from Statistics

  1. Match the following:

    (a) Marginalist Revolution(i) Samuelson
    (b) Multiplier-Accelerator model(ii) J. R. Hicks
    (c) IS-LM curves(iii) Jevous
    (d) Real Business Cycle(iv) Robert J. Borro

    Choose the correct option from those given below:

  2. Which one of the following responses is true as a solution to simultaneous equation bias?

    A. OLS method

    B. Principle Component Method

    C. Two - stage Least Square Method (2 SLS method)

    D. Full Information Maximum Likelihood method (FIML)

    Choose the correct option.

  3. Time series under the condition (E xt ) = μ and cov(x t, x t + k ) = Y(K) is said to be

  4. Given the sample size 400 with the sample mean 99, the population mean 100 and computed value of z statistic at 2.5, the value of population standard deviation will be

  5. Which one of the following price index numbers satisfies the factor reversal test?

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