Probability & Statistics 2019-Objective

Group A

Attempt all the questions. [10x1 = 10]

1.

i) How many types of data on the basis of sources of data collection?

a) 1    b) 2    c) 3    d) 4

1.

ii) Which is more appropriate central tendency to find the average of profit?

a) Arithmetic mean    b) Median    c) Mode    d) All

1.

iii) What is the range of Correlation?

a) 0 to ∞    b) -∞ to ∞    c) -1 to 1    d) 0 to 1

1.

iv) If r=0.2 then coefficient of determination implies that

a) 20% of total variation in dependent variable has been explained by independent variable.

b) 40% of total variation in dependent variable has been explained by independent variable.

c) 2% of total variation in dependent variable has been explained by independent variable.

d) )4% of total variation in dependent variable has been explained by independent variable.

1.

v) What is the minimum value of Probability?

a) 1    b) 100    c) 0    d) None of above

1.

vi) In case of Normal distribution

a) Mean >Median     b) Mean =Median     c) Mean ≤Median     d) Mean ≥Median

1.

vii) The regression line of X on Y and Y on X are intersect at the point

a) (µ,0)    b) (a,b)    c) (X,Y)    d) (

1.

viii) In case of systematic sampling

a) sample mean is biased estimator population mean.

b) sample mean is unbiased estimator population mean.

c) sample mean can’t estimate population mean.

d) sample mean may equal to population mean

1.

ix) Mean of Chi-Square distribution with n degrees of freedom is

a) 1    b) 0    c) 2n    d) n

1.

x) How do you obtain degree of freedom in one-way ANOVA?

a) (k, n-1)    b) (k, n-k)    c) (k-1, n-1)    d) k-1, n-k)