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Practice_Midterm

# Practice_Midterm - STAT511 Multiple Choice Practice...

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STAT511 Practice Problems Spring 10 Multiple Choice: 1. Which one of the following is correct? A Histogram is a visual display of a sample data set. B Stem-and-leaf display can show us the mean of the sample data set. C Boxplot does not show any quartile of the sample data set. D Sample mean is the only measure of the center of the sample data set. 2. Which of the following is not a measure of location? A Range B Trimmed mean C Median D Mean 3. Draw 4 cards without replacement from a deck of 52 cards, what is the probability that they are all hearts? A ( 13 4 ) ( 52 4 ) B ( 13 4 ) ( 52 4 ) - ( 39 4 ) C ( 13 4 )( 4 1 ) ( 52 4 ) D ( 1 4 ) 4 4. A deck of 52 cards, take 4 out one by one with replacement. What is the probability that there are 3 hearts? A ( 13 3 ) ( 52 4 ) B ( 13 3 )( 39 1 ) ( 52 4 ) C ( 4 3 ) ( 1 4 ) 3 ( 3 4 ) D None of the above. 5. Two events A, B . A occurs with probability 0 . 6, B occurs with probability 0 . 4. Probability of at least one of A , B occur is 0 . 7. Now given B has occurred, what is the probability that A occurs?

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