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