STA301 Midterm Past Paper Session 1

MIDTERM EXAMINATION

STA301Statistics and Probability (Session - 1)

Q1. If any value in the data is zero, then it is not possible to have: (1 marks)

Harmonic Mean Arithmetic Mean Median Mode

Mode

Q2. For a symmetrical distribution…………is equidistance from median: (1 marks)

X0 and Xm

Q1. X0 and Q1

Xm and Q3

Q3. Which one of the following measure is not used in ‘five number summery’: (1 marks)

X

Q X

Q

Q4. If Mean = 25 & S.D is 5 then C.V is (1 marks)

100%

25% 20% 10%

Q5. A coin is tossed 3 times then, the number of sample points ii the sample space is: (1 marks)

Q6. What is the difference between a permutation and a combination: (1 marks)

In a permutation order is important and in a combination it is not In a permutation order is not important and in a combination it is important A combination is based on the classical definition of probability A permutation is based on the classical definition of probability

Q7. What we consider in simple correlation analysis: (1 marks)

Several independent variables Strength of the association between two variables Intercept with the X-axis Intercept with the Y-axis

Q8. 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)

0 = r = 1 r = 0 r = +1 r=-1