ACET (Actuarial Common Entrance Test) Statistics: Questions 38 - 43 of 201
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Question 38
Question MCQ▾
For 50 students of a class the regression equation of marks in Statistics and Mathematics is , where X and Y respectively represent marks in Statistics and Mathematics is 44, then the mean marks in Statistics are
Choices
Choice (4) | Response | |
---|---|---|
a. | 72.5 | |
b. | 54.2 | |
c. | 62.4 | |
d. | 24.9 |
Question 39
Question MCQ▾
Which of the following is NOT a frequency diagram?
Choices
Choice (4) | Response | |
---|---|---|
a. | Ogive | |
b. | Pie Chart | |
c. | Histogram | |
d. | Polygon |
Question 40
Question MCQ▾
For a bivariate data, the mean value of , the mean value of , the regression coefficient of Y on X is and the correlation coefficient between X and Y is . Find the regression coefficient of X on Y.
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. | Question does not provide sufficient data or is vague |
Question 41
Question MCQ▾
Two events A and B are mutually exclusive and . Find the probability that either A or B will occur.
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. | Question does not provide sufficient data or is vague |
Question 42
Question MCQ▾
The Mean and Median values of a series are 16 cm and 20 cm respectively. What is the modal value of the series?
Choices
Choice (4) | Response | |
---|---|---|
a. | 18 | |
b. | 20 | |
c. | 28 | |
d. | 24 |
Question 43
Question MCQ▾
Which probability distribution is suitable for calculating the number of air accidents in some unit of time?
Choices
Choice (4) | Response | |
---|---|---|
a. | Binomial | |
b. | Normal | |
c. | Geometric | |
d. | Poisson |