mont4e_sm_ch06_mind

Therefore the median would be a better estimate of

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Unformatted text preview: n would be a better estimate of the density of the earth. The median is not affected by a few outliers. Mind Expanding Exercises 2 ⎛9 ⎞ ⎜ ∑ xi ⎟ = 559504 ⎝ i =1 ⎠ 9 6-95 ∑ xi2 = 62572 i =1 n=9 2 ⎛9 ⎞ ⎜ ∑ xi ⎟ 9 ∑ xi2 − ⎝ i=1 n ⎠ 62572 − 559504 9 s 2 = i =1 = = 50.61 n −1 9 −1 s = 50.61 = 7.11 Subtract 30 and multiply by 10 2 9 ∑x i =1 2 i = 2579200 ⎛9 ⎞ ⎜ ∑ xi ⎟ = 22848400 ⎝ i =1 ⎠ 6-58 n=9 2 ⎛9 ⎞ ⎜ ∑ xi ⎟ 9 ∑ xi2 − ⎝ i=1 n ⎠ 2579200 − 22848400 9 s 2 = i =1 =...
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