Q1) If boxplot for one set of data is much wider than boxplot for second set of data, then

A) Mean of first set of data should be larger than mean of second set of data.

B) Median of first set of data should be larger than te median of the second set of data.

C) The second set of data should contain many outliers.

D) none of the above require to be true.

Q2) What kind of probability uses sample spaces to find out numerical probability that event will happen?

a) Classical probability            

b) Conditional probability

c) Empirical probability

d) Subjective probability

Q3) Staff at small company comprises: 4 secretaries, 20 technicians, 4 engineers, 2 executives, and 50 factory workers. If person is chosen at arbitrary, determine the probability that he or she is factory worker?

i) 1/4     

ii)1/8     

iii)5/8    

iv) 2/5  

Q4) Normal distribution in which approximately 68% of data values fall within one standard deviation of mean behaves according to

i) the empirical rule.               .

ii) a symmetrical distribution.              

iii)a boxplot

iv)differential statistics.

Q5) Student scored 84 points on test where mean score was 79 and standard deviation was 4.  Student's z score was

i)  19.75   

ii)  21.00   

iii)  0.31   

iv)  1.25

Q6) Determine  Q1, Q2 and  Q3  for following data set. 7, 21, 32, 38.