Casio fx-82MS Guide Book

30 Mastering the Calculator using the Casio fx-82MS
(b) The sample of snail foot lengths
Answers:
(a) Rainfall statistics
mean:
µ = 1 265.3 mm
standard deviation:
= 336.4 mm
variance:
σ
2
= 113141.7 mm
2
(b) Snail statistics
mean:
= 3.4 cm
standard deviation:
s = 0.70 cm
variance:
s
2
= 0.49 cm
2
Snail foot length (cm)
2.2 4.1 3.5 4.5 3.2 3.7 3.0 2.6
3.4 1.6 3.1 3.3 3.8 3.1 4.7 3.7
2.5 4.3 3.4 3.6 2.9 3.3 3.9 3.1
3.3 3.1 3.7 4.4 3.2 4.1 1.9 3.4
4.7 3.8 3.2 2.6 3.9 3.0 4.2 3.5
σ
n-
1
x

Casio fx-82MS Specifications

General

Type	Scientific
Form factor	Pocket
Battery type	AA
Power source	Battery

Weight and Dimensions

Weight	125 g
Dimensions (WxDxH)	18.6 x 85 x 156 mm