Q.12619·Miscellaneous·2013·EasyThe mean of 20 observations is 15. On checking, it was found that two observations were wrongly copied as 3 and 6. If wrong observations are replaced by correct values 8 and 4, then the correct mean isView question
Q.12620·Miscellaneous·2013·EasyThe arithmetic mean of the squares of the first n natural numbers isView question
Q.12621·Miscellaneous·2013·EasyConsider the following statements : 1. Both the regression coefficients have same sign. 2. If one of the regression coefficients is greater than unity, the other must be less than unity. Which of the above statements is/are correct?View question
Q.12622·Miscellaneous·2013·EasyWhich one of the following measures is determined only after the construction of cumulative frequency distribution?View question
Q.12624·Miscellaneous·2013·EasyIf three events A, B, C are mutually exclusive, then which one of the following is correct?View question
Q.12626·Miscellaneous·2013·EasyIn a binomial distribution, the occurrence and the non-occurrence of an event are equally likely and the mean is 6. The number of trials required isView question
Q.12627·Miscellaneous·2013·EasyA die is tossed twice. What is the probability of getting a sum of 10?View question
Q.12628·Miscellaneous·2013·EasyThree dice are thrown. What is the probability of getting a triplet?View question
Q.12629·Miscellaneous·2013·EasyConsider the following statements : 1. If A and B are exhaustive events, then their union is the sample space. 2. If A and B are exhaustive events, then their intersection must be an empty event. Which of the above statements is/are correct?View question
Q.12630·Miscellaneous·2013·EasyConsider the following statements : 1. The algebraic sum of the deviations of a set of n values from its arithmetic mean is zero. 2. In the case of frequency distribution, mode is the value of the variable which corresponds to maximum frequency. Which of the statements given above is/are correct?View question
Q.12631·Miscellaneous·2013·EasyWhich one of the following may be the parameter of a binomial distribution?View question
Q.12632·Miscellaneous·2013·EasyWhat is the number of outcomes when a coin is tossed and then a die is rolled only in case a head is shown on the coin?View question
Q.12633·Miscellaneous·2013·EasyWhat is the probability that there are 5 Mondays in the month of February 2016?View question
Q.12634·Miscellaneous·2013·EasyIn a relay race, there are six teams A, B, C, D, E and F. What is the probability that A, B, C finish first, second, third respectively?View question
Q.12635·Miscellaneous·2013·EasyThe variance of 20 observations is 5. If each observation is multiplied by 2, then what is the new variance of the resulting observations?View question
Q.12636·Miscellaneous·2013·EasyWhat is (cot 54° / tan 36°) + (tan 20° / cot 70°) equal to?View question