Practice Test

Q1) The number of observations corresponding to particular class is known as the ________ of that class. Show Answer

Q2) _________ Method of classification should be preferred. Show Answer

Q3) In a 3 x 2 contingency table there are _______ cells. Show Answer

Q4) If there are m classes for X and n classes for Y, then there will be ______ cells in the two way table. Show Answer

Q5) The frequency distribution of one variable, eliminating the values of the other variable is called ________. Show Answer

Q6) The frequency distribution of one variable for given value of the other variable is called _________. Show Answer

Q7) The following data gives the marks of 10 students in test of Economics (X) and English (Y).
(30, 10), (12, 22), (18, 19), (20, 25), (13, 34), (28, 29), (14, 18), (27, 24), (16, 16), (15, 20).
How many students scored more than 20 marks in Economics? Show Answer

Q8) The following data gives the marks of 10 students in test of Economics (X) and English (Y).
(30, 10), (12, 22), (18, 19), (20, 25), (13, 34), (28, 29), (14, 18), (27, 24), (16, 16), (15, 20).
How many students scored more than 20 marks in English? Show Answer

Q9) Following data gives marks of 20 students in Mathematics (X) and Statistics (Y).
(2, 7), (3, 8), (4, 9), (2, 8), (2, 8), (5, 6), (5, 7), (4, 9), (3, 8), (4, 8), (2, 9), (3, 8), (4, 8), (5, 6), (4, 7), (4, 7), (4, 6), (5, 6), (5, 7), (4, 6).
How many students scored 2 < X < 5 in Mathematics? Show Answer

Q10) A variable that takes ________ values is called categorical variable. Show Answer

Q11) Which of the following is an example of categorical variable? Show Answer

Q12) Bivariate data involve the study of _____. Show Answer

Q13) The frequencies together with values of which variable give the marginal frequency distribution of X? Show Answer

Q14) For Bivariate frequency distribution, total frequency is obtained as _____. Show Answer

Q15) Expected frequencies are given by which of the following formula? Show Answer

Q16) Expected frequencies for the corresponding observations 20, 30, 24 and 26 are 28, 36, 20 and 22 respectively, then what is the value of x2? Show Answer