Qnt Quiz Essay

1111 Words5 Pages
1) Which of the following measures of central location is affected most by extreme values? A. Median B. Geometric mean C. Mean D. Mode Ans : C 2) A difference between calculating the sample mean and the population mean is: A. Only in the symbols, we use x instead of µ and n instead of N. B. There are no differences. C. We divide the sum of the observations by n - 1 instead of n D. The observations are ranked and select the middle value for the population mean. Ans: A 3) In a set of observations, which measure of central tendency reports the value that occurs most often? A. Mean B. Geometric mean C. Median D. Mode Ans: D 4) Which of the following is not a requirement of a binomial distribution? A. A constant probability of success. B. Equally likely outcomes. C. Only two possible outcomes. D. A fixed number of trails. Ans: B 5) Which of the following is not a requirement of a probability distribution? A. Equally likely probability of a success. B. The probability of each outcome is between 0 and 1. C. Sum of the possible outcomes is 1.00. D. The outcomes are mutually exclusive. Ans: A 6) In which of the following distributions is the probability of a success usually small? A. Binomial B. Hypergeometric C. Poisson D. All distribution Ans: C 7) The difference between the sample mean and the population mean is called the A. Population mean. B. Standard error of the mean. C. Population standard deviation. D. Sampling error. Ans: D 8) Suppose a population consisted of 20 items. How many

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