Standard Deviation in Mayfield

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Standard Deviation for Walking

(0.5 x 7) + (1 x 21) + (1.5 x 4) + (2 x 15) + (2.5) + (3 x 3) + (4 x 3) + (6 x 2) + (8) + (9) = 113

113 ÷ 58 = 1.948 (Rounded)

Mean / = 1.948


                                 

                                  Total of (Xi -  )² = 169.5401

Xi Amount = 58

169.5401 ÷ 58 = 2.923105172

Variance = 2.923105172

Standard Deviation = 2.923105172

Standard Deviation = 1.7097 (Rounded)

Means of Travel: Tram

Students that have to travel a distance of 1.99km or less to school do not travel to school using a tram at all. From the distance of 2km the use of tram as travel is used, until 8.99km. The lower quartile is 3.8Km, the median is 5.5Km, the upper quartile is 6.2Km and the inter-quartile range is 2.4Km.

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Standard Deviation for Tram Travel

(2 x 5) + (2.5 x 2) + (3 x 5) + (4 x 4) + (5 x 15) + (6 x 7) + (7 x 4) + (8 x 2) = 207

207 ÷ 44 = 4.704 (Rounded)

Mean / = 4.704


Total of (Xi -  )² = 118.6591

Xi Amount = 44

118.6591 ÷ 44 = 2.696797727

Variance = 2.696797727

Standard Deviation = 2.696797727

Standard Deviation = 1.642 (Rounded)

Means of Travel: Combination

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