1
AP EAPCET 2021 - 20th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the mean of a data x is 10 and if all the observations are multiplied by 2, then the mean of new data is

A
30
B
15
C
50
D
20
2
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

The mean deviation from the mean of the set of observation $$-1,0,4$$ is

A
3
B
1
C
$$-$$2
D
2
3
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Let an angle of a triangle is 60$$^\circ$$. If the variance of the angles of the triangle is 1014$$^\circ$$, then the other two angles are

A
23$$^\circ$$ and 97$$^\circ$$
B
22$$^\circ$$ and 68$$^\circ$$
C
21$$^\circ$$ and 99$$^\circ$$
D
20$$^\circ$$ and 100$$^\circ$$
4
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

For the random variable X with probability distribution is given by the table

$$X=x$$ 0 1 2 3
$$P(X=x)$$ $$K$$ $$K+\frac{1}{7}$$ $$2K$$ $$\frac{2}{5}$$

The mean of X is

A
$$\frac{31}{35}$$
B
$$\frac{57}{35}$$
C
$$\frac{63}{35}$$
D
$$\frac{67}{35}$$

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