Stats Exam 78%Latest Update 2024.

Stats Exam 78%Latest Update 2024. The data in the table represent the height of an object over time. Which model best represents the data? quadratic, because the height of the object increases or decreases with a multiplicative rate of change quadratic, because the height increases and then decreases exponential, because the height of the object increases or decreases with a multiplicative rate of change exponential, because the height increases and then decreases - CORRECT ANSWER quadratic, because the height increases and then decreases The histogram below shows the number of properties in a town that sold within certain time periods. A bar graph entitled Number of Properties has Number of Days to Sell on the x-axis and number of properties on the y-axis, from 9 to 13. 11 properties took 1 to 30 days to sell; 10 properties took 31 to 60 days to sell; 12 properties took 61 to 91 days to sell. Why might the graph be considered misleading? The scales on the x- and y-axes are unequal. The interval on the x-axis is too large for the data set. The scale on the y-axis misrepresents the difference in the heights of the bars. The interval on the y-axis is too large for the data set. - CORRECT ANSWER The scale on the y-axis misrepresents the difference in the heights of the bars. The table shows the maze-completion times, in seconds, of two sets of mice in an experiment. Which statement is true about the variability of the group times? The times in Group A have a greater standard deviation. The times in Group A have a greater median. The times in Group B have a greater interquartile range. The times in Group B have a greater mean. - CORRECT ANSWER The times in Group A have a greater standard deviation. The quadratic model f(x) = -5x2 + 200 represents the approximate height, in meters, of a ball x seconds after being dropped. The ball is 50 meters from the ground after about how many seconds? 2.45 3.16 5.48 7.07 - CORRECT ANSWER 5.48 The equation of the trend line on the scatterplot below is . Using the trend line equation, what is the predicted approximate value of y when x = 3.5? 2.98 4.02 4.31 5.35 - CORRECT ANSWER 4.31 Rhonda 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?Duck Pond SamplesSample 1Sample 2Mallard19Mallard38Wood Duck3Wood Duck1Green Wing Teal10Green Wing Teal1American Widgeon8American Widgeon0 Rhonda needs to continue taking samples of ducks until both samples have at least one of each type of duck. Rhonda should take a third sample and then use the two that are most representative since these samples vary quite a bit. Rhonda should use both of these samples as they are to make inferences about the average population of each type of duck in the pond. Both samples must be biased because there are more Mallards than any other type of duck recorded in the sample. - CORRECT ANSWER Rhonda should use both of these samples as they are to make inferences about the average population of each type of duck in the pond.