# Question

Cicadas are flying, plant-eating insects. One particular species, 13-year cicadas (Magicicada), spends five juvenile stages in underground burrows. During the 13 years underground, the cicadas grow from approximately the size of a small ant to nearly the size of an adult cicada. Every 13 years, the animals then emerge from their burrows as adults.The following table presents three different species of these 13-year cicadas and their corresponding adult body weight (BW), in grams, and wing length (WL), in millimeters.

a. Construct a scatter diagram of the body weights, x, and the corresponding wing lengths, y. Use a different symbol to represent the ordered pairs for each species.

b. Describe what the scatter diagram displays with respect to relationship and species.

c. Calculate the correlation coefficient, r.

d. Find the equation for the line of best fit.

e. Suppose the body weight of a cicada is 0.20 gram. What wing length would you predict? Which species do you think this cicada might be?

a. Construct a scatter diagram of the body weights, x, and the corresponding wing lengths, y. Use a different symbol to represent the ordered pairs for each species.

b. Describe what the scatter diagram displays with respect to relationship and species.

c. Calculate the correlation coefficient, r.

d. Find the equation for the line of best fit.

e. Suppose the body weight of a cicada is 0.20 gram. What wing length would you predict? Which species do you think this cicada might be?

## Answer to relevant Questions

Yellowstone National Park’s Old Faithful has been a major tourist attraction for a long time. Understanding the duration of eruptions and the time between eruptions is necessary to predict the timing of the next eruption. ...Draw a coordinate axis and plot the points (0, 6), (3, 5), (3, 2), and (5, 0) to form a scatter diagram. Describe the pattern that the data show in this display. An experimental psychologist asserts that the older a child is, the fewer irrelevant answers he or she will give during a controlled experiment.To investigate this claim, the following data were collected. Draw a scatter ...Does studying for an exam pay off? The number of hours studied, x, is compared with the exam grade received, y: a. Complete the preliminary calculations: extensions, five sums, SS(x), SS(y), and SS(xy). b. Find r. The “In the eye of the beholder” graphic shows two circle graphs, each with four sections. This same information could be represented in the form of a 2 × 4contingency table of two qualitative variables. a. Identify the ...Post your question

0