Refer to the previous question.

a. Draw a frequency distribution of startle durations measured on the first occasion.

b. Describe the shape of the frequency distribution: is it skewed or symmetric? If skewed, say whether the skew is positive or negative.

Data from previous question

Animal personality” has been defined as the presence of consistent differences between individuals in behaviors that persist over time. Do sea anemones have it? To investigate, Briffa and Greenaway (2011) measured the consistency of the startle response of individuals of wild beadlet anemones, Actinia equina, in tide pools in the U.K. When disturbed, such as with a mild jet of water (the method used in this study), the anemones retract their feeding tentacles to cover the oral disc, opening them again some time later. The accompanying table records the duration of the startle response (time to reopen, in seconds) of 12 individual anemones. Each anemone was measured twice, 14 days apart.

The data are below and also at whitlockschluter3e.zoology.ubc.ca.

Transcribed Image Text:

TABLE FOR PROBLEM 17 Anemone: 1 2 3 4 Occasion 10651065 248248 436436 350350 One Occasion Two 939939 268268 460460 261261 5 378378 6 7 410410 232232 8 9 201201 267267 368368 467467 303303 188188 401401 10 687687 681 690690 711