Calculate the sample mean distance at which the bat first detects an insect. (Round your answer to four decimal places.)   cm Calculate the sample variance and standard deviation for this data set. (Round your answers to two decimal places.) Variance _____ Standard deviation ____   Subtract 10 from each sample observation. For the new set of values, compute the mean. (Round your answer to four decimal places.)

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Although bats are not known for their eyesight, they are able to locate prey (mainly insects) by emitting high-pitched sounds and listening for echoes. A paper gave the following distances (in centimeters) at which a bat first detected a nearby insect.
61 24 42 56 27 83 52 42 68 34 45
 
Calculate the sample mean distance at which the bat first detects an insect. (Round your answer to four decimal places.)
  cm
Calculate the sample variance and standard deviation for this data set. (Round your answers to two decimal places.)
Variance _____
Standard deviation ____
 
Subtract 10 from each sample observation. For the new set of values, compute the mean. (Round your answer to four decimal places.)
  cm
Calculate the sample variance and standard deviation for the new data set. (Round your answers to two decimal places.)
Variance ________ 
Standard deviation _______
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