The following shows the length of 9 babies
42cm, 40cm, 48cm, 45cm, 45cm, 52cm, 42cm, 42cm, 50 cm
a) find the mean
b) find the median
c) fund the inter-quartile range
d) draw a box and whisker diagram for the data
Maths
2009-01-10 5:55 am
回答 (1)
2009-01-12 11:26 pm
✔ 最佳答案
40cm, 42cm, 42cm, 42cm, 45cm, 45cm, 48cm, 50cm, 52cma)Mean = SUM of (42cm, 40cm, 48cm, 45cm, 45cm, 52cm, 42cm, 42cm, 50 cm)/9=45.11cm
b)Median = middle one = 45cm
c)Q1: 42, Q3=(48+50)/2 = 49, inter-quartile range=49-42=7cm
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