STA100 Midterm Past Papers Set 3

Q1. 10! (1 marks)

1. 362880
2. *
3. 3628800
4. 362280
5. 362800

Q2. If a player well shuffles the pack of 52 playing card, then the probability of a black card from 52 playing cards is: (1 marks)

Q3. The probability of drawing a ‘jack card ‘ from 52 playing cards is: (1 marks)

Q4. Which dispersion is used to compare variation of two series: (1 marks)

1. C.V.
2. *
3. Q.D.
4. M.D.
5. S.D.

Q5. If all the values fall on the same straight line and the line has a positive slope then what will be the value of the correlation coefficient ‘r’: (1 marks)

1. 0 ≤ r ≤ 1
2. r ≥ 0
3. *
4. r = +1
5. r=-1

Q6. In a regression line Y= a + bX, the value of the correlation coefficient will be zero if: (1 marks)

1. *
2. Intercept a = 0
3. Intercept a ≠ 0
4. Slope b = 0
5. Slope b ≠ 0

Q7. When two coins are tossed the probability of at least one head is: (1 marks)

1. 1/4
2. *
3. 3/4
4. 2/4
5. 4/4

Q8. Which one of the following measurement does not divide a set of observations into equal parts? (1 marks)

1. quartiles
2. deciles
3. percentiles
4. *
5. standard deviations

Q9. In the model Y = mX + a, Y is also known as the: (1 marks)

1. Predictor variable
2. Independent variable
3. Predicted variable
4. Explanatory variable

Q10. According to empirical rule approximately 95% of the measurements will fall under which (1 marks)

1. X

S X S X S X S

Q11. Which one of the following is written at the top of the table? (1 marks)

1. Source note
2. Foot note
3. Prefatory note
4. *
5. Title

Q12. If a curve has a longer tail to the right, it is called : (1 marks)

1. *
2. Positively skewed
3. Negatively skewed
4. J-shaped