Electrical Engineering (EE) Exam > Electrical Engineering (EE) Tests > Test: Probability & Statistics - Electrical Engineering (EE) MCQ

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Test: Probability & Statistics - Question 1

If the arithmetic mean of two numbers is 10 and their geometric mean is 8, the numbers are

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Test: Probability & Statistics - Question 2

The median of

0, 2, 2, 2, -3, 5, -1, 5, 5, -3, 6, 6, 5, 6 is

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Test: Probability & Statistics - Question 3

Consider the following table

The median of the above frequency distribution is

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Test: Probability & Statistics - Question 4

The mode of the following frequency distribution, is

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Test: Probability & Statistics - Question 5

The mean-deviation of the data 3, 5, 6, 7, 8, 10, 11, 14 is

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Test: Probability & Statistics - Question 6

The mean deviation of the following distribution is

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Test: Probability & Statistics - Question 7

The standard deviation for the data 7, 9, 11, 13, 15 is

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Test: Probability & Statistics - Question 9

The probability that an event A occurs in one trial of an experiment is 0.4. Three independent trials of experiment are performed. The probability that A occurs at least once is

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Test: Probability & Statistics - Question 10

Eight coins are tossed simultaneously. The probability of getting at least 6 heads is

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Test: Probability & Statistics - Question 11

The ranks obtained by 10 students in Mathematics and Physics in a class test are as follows

The coefficient of correlation between their ranks is

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Test: Probability & Statistics - Question 12

If ∑x_{i} = 24, ∑y_{i} = 44, ∑x_{i}y_{i} = 306, ∑x_{i}^{2} =164 ,∑y_{i}^{2} = 574 and n = 4 then the regression coefficient b_{xy } is equal to

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Test: Probability & Statistics - Question 13

If ∑x_{i} = 30, ∑y_{i} = 42, ∑x_{i}y_{i} = 199 , ∑x_{i}^{2} =184 ,∑y_{i}^{2} = 318 and n = 6 then the regression coefficient b_{xy } is equal to

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Test: Probability & Statistics - Question 14

Let r be the correlation coefficient between x and y and b_{xy} ,b_{yx} be the regression coefficients of y on x and x on y respectively then

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Test: Probability & Statistics - Question 16

If b_{yx }= 1.6 and b_{xy} = 0.4 and θ is the angle between two regression lines, then tan θ is equal to

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Test: Probability & Statistics - Question 17

The equations of the two lines of regression are : 4x + 3y + 7 = 0 and 3x + 4y + 8 = 0. The correlation coefficient between x and y is

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Test: Probability & Statistics - Question 18

If cov(X, Y) = 10, var (X) = 6.25 and var(Y) = 31.36, then ρ(X,Y) is

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Test: Probability & Statistics - Question 19

If ∑x = ∑y = 15, ∑x^{2} = ∑y^{2} = 49, ∑xy = 44 and n = 5, then b_{xy} = ?

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Test: Probability & Statistics - Question 20

If ∑x = 125, ∑y = 100 , ∑x^{2} = 1650, ∑y^{2} = 1500 , ∑xy = 50 and n = 25, then the line of regression of x on y is

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