Determine the quartiles and the interquartile range

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In a study of the lizard Sceloporus occidentalis, biologists measured the distance (m) run in two minutes for each of 15 animals.

The results were as follows: 18.4 22.2 24.5 26.4 27.5 28.7 30.6 32.9 32.9 34.0 34.8 37.5 42.1 45.5 45.5

(a) Determine the quartiles and the interquartile range.

(b) Determine the range.

(c) The sample mean is 32.23m and the SD is 8.07m. What percentage of the observations are within 1 SD of the mean? 2 SDs of the mean? show the step for question (c)

Reference no: EM132391546

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