{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

1sol - The University of Hong Kong Department of Statistics...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
The University of Hong Kong Department of Statistics and Actuarial Science STAT0302 Business Statistics Semester 2 2008/2009 Assignment 1 Suggested Solution 1. (a) Column chart, pie chart. (b) Frequency table, proportion table. (c) Mean=32.8333 Median= 32.0 Mode= 32.0 Range= 8.1 Standard deviation= 2.1088 Skewness= 1.1855 2. (a) The frequency distribution table: i Class Frequency i f 1 0.05 – 3.05 6 2 3.05 – 6.05 15 3 6.05 – 9.05 23 4 9.05 – 12.05 18 5 12.05 – 15.05 10 6 15.05 – 18.05 8 Total 80 (b) Class mark i x Frequency i f 1.55 6 4.55 15 7.55 23 10.55 18 13.55 10 16.55 8 Total 80 Population mean: 6 1 1 8.8625 i i i x f N = μ = = Median= ( ) 3 1 1 3 3 3 2 80 2 6 15 6.05 3 8.528261 8.5283 23 i i N f L c f = + + = + × = = Mode= 3 2 3 3 3 2 4 23 15 6.05 3 7.8962 2 2 23 15 18 f f L c f f f + = + × = × Population standard deviation: 6 2 2 1 1 4.158106 4.1581 i i i x f N σ μ = = = = 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon