ICS Part 2 Statistics Online Test With Answers

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ICS Part 2 Statistics Online Test

Sr. # Questions Answers Choice
1 The point of inflection in normal distribution are _______. μ - σ, μ + σ μ - σ, μ + 2σ μ, σ None of these
2 The mean deviation (M.D) of a normal distribution is ________. 4/5 σ 5/4 σ 2/3 σ None of these
3 The Quartile deviation (Q.D) of a normal distribution is_______. 4/5 σ 5/4 σ 2/3 σ None of these
4 In normal distribution. Mean > median > mode Mean = median = mode Mean < median < mode None of these
5 The normal distribution is a bell shaped_______ distribution. Discrete Continuous Symmetrical Skewed
6 The normal distribution is a _______. Positive Negative Discrete Continuous
7 The maximum ordinate of a normal curve is at X = ________. μ σ X̅ S.D
8 Normal distribution ranges from_______. 1,2,3,............∞ -∞ to +∞ 1,2,3,.........n None of these
9 The total area under the normal curve is________. Zero Equal Unity True
10 The sum of deviations=Σ(y-ŷ) = 0 1 10 -1
11 ŷ=a+bx, this line will be called least squares line if it makes=Σ(y-a-bx)2 maximum constant minimum variable
12 The equation of the quadratic (parabolic) trend is ŷ=a+bx ŷ=a+by ŷ=a+bΣx+cΣx<sup>2</sup> ŷ=a+bx+cx<sup>2</sup>
13 For a least squares linear trend ŷ = a + bx, the Σ(y-ŷ)2 = 0 when all the y-values lie on the line all the y-values are positive all the y-+values lie above the line none of these
14 For a least squares linear trend=ŷ= a + b x, Σy &lt;Σŷ Σŷ = 0 Σy =Σŷ none of these
15 For a least squares linear trend=ŷ = a + bx, b is the variable intercept trend slope
16 6Σd<sub>1</sub> 5Σd<sup>1</sup> <br>
17 Φ<sup>2</sup> q<sup>2</sup> α<sup>2</sup> β<sup>2</sup>
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