STATS PRACTICE EXAM QUESTIONS 2024.

STATS PRACTICE EXAM QUESTIONS 2024. Eldrick manages wildlife samples for Ducks Unlimited. Two samples of duck populations at a migratory site are shown in the table below. Which statement about the samples is true? - CORRECT ANSWER Eldrick should take another sample because there is too much variability in the two samples. A restaurant serves three types of omelettes. Surveys were taken of the last two days of orders and are displayed in the table below. Approximately 200 omelettes are served each day. What is the average number of ham and cheese omelettes served each day? - CORRECT ANSWER 120 The owner of a local restaurant surveyed her staff on their preference of uniform color. The results are displayed in the table below. Which pair of samples is most representative of the preference of all the staff? - CORRECT ANSWER NOT None of the samples are representative because none of the values remained constant. Braden wants to compare the types of ducks in two nearby ponds. He collected two samples using the following criteria. For sample 1, he counted the types of ducks on Walden Pond from 6 A.M. to 9 A.M. For sample 2, he counted the number of Mallard ducks that were on Brook's Pond from 12 P.M. to 3 P.M. What would improve Braden's plan? Check all that apply. - CORRECT ANSWER Braden should sample the ducks on each pond at the same time of day because animals are active at different times. Braden should sample twice at each pond if he wants to make sure each sample is representative of the population. Braden should count more than Mallard ducks on Brook's Pond if he wants to compare the types of ducks on each pond. Mr. Sanchez surveyed classes to aid in planning the end-of-year party. For the first sample, Mr. Sanchez surveyed every third person on each first-period class roster. For the second sample, Mr. Sanchez surveyed his five honors math classes. Which statement about Mr. Sanchez's samples is true? - CORRECT ANSWER Sample 2 is biased. Ducks Unlimited helps sample duck species across the United States. Samples from one particular location for the last two years are shown below. Which duck population seemed to hold steady? - CORRECT ANSWER Wood Duck Two samples were taken of fish caught on Small Lake and are shown in the table below. It is estimated that the Small Lake fish population is roughly 1,000 fish. What is the average number of brown trout in the lake? - CORRECT ANSWER 80