STA301 Midterm Past Paper 2

MIDTERM EXAMINATION Spring 2009 STA301Statistics and Probability (Session - 6) Time: 60 min Marks: 38

Q1. For a positively skewed distribution m3 will be: (1 marks)

1. Positive
2. Negative
3. Zero
4. 1

Q2. When data is labeled to identify an attribute of element, the measurement scale is: (1 marks)

1. Ordinal
2. Interval
3. Nominal
4. Ratio

Q3. Suppose the estimated equation is (1 marks)

has been calculated for a set of data. What is slop of the line:

1. 0
2. 2
3. -2
4. 5

Q4. If P(B|A) = 0.25 and (1 marks)

, then P(A) is:

1. 0.05
2. 0.80
3. 0.95
4. 0.75

Q5. Which branch of statistics deals with the techniques that are used to organize, summarize, and present the data: (1 marks)

1. Advance statistics
2. Probability statistics
3. Descriptive statistics
4. Inferential statistics

Q6. In a sample of 800 students in a university, 160, or 20%, are Business majors. Based on the above information, the school's paper reported that "20% of all the students at the university are Business majors." This report is an example of : (1 marks)

1. A sample
2. A population
3. Sstatistical inference
4. Descriptive statistics

Q7. A set that contains all possible outcomes of a system is known as (1 marks)

1. Finite Set
2. Infinite Set
3. Universal Set
4. No of these