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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