1
NDA Mathematics 21 April 2024
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the following for the next two (02) items that follow:
| $x_i$ | 1 | 2 | 3 | ... | $n$ |
|---|---|---|---|---|---|
| $f_i$ | 1 | $2^{-1}$ | $2^{-2}$ | ... | $2^{-(n-1)}$ |
$$
\text { What is } \sum_i^n x_i f_i \text { equal to? }
$$
2
NDA Mathematics 21 April 2024
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the following for the next two (02) items that follow:
| $x_i$ | 1 | 2 | 3 | ... | $n$ |
|---|---|---|---|---|---|
| $f_i$ | 1 | $2^{-1}$ | $2^{-2}$ | ... | $2^{-(n-1)}$ |
What is the mean of the distribution?
3
NDA Mathematics 21 April 2024
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the following for the next two (02) items that follow:
The marks obtained by 10 students in a Statistics test are 24, 47, 18, 32, 19, 15, 21, 35, 50 and 41.
What is the mean deviation of the largest five observations?
4
NDA Mathematics 21 April 2024
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the following for the next two (02) items that follow:
The marks obtained by 10 students in a Statistics test are 24, 47, 18, 32, 19, 15, 21, 35, 50 and 41.
What is the variance of the largest five observations?
Questions Asked from Statistics (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
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