as3-083-soln

as3-083-soln - Stat1181 Assignment3Solutions #2.16(b)...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Stat 1181  Assignment 3 – Solutions #2.16 (b) Stem-and-Leaf Display for Cost_$_: unit = 10.0 1|2 represents 120.0 6 1|233333 14 1|44445555 (4) 1|6777 12 1|888999 6 2|00001 HI|288.0 The distribution of costs appears to be bimodal;  18 of the 30 costs are less than $180, or 60%.  #2.29 (a) and (b) only.  (a) and (b)  To construct the frequency table, we need to determine the number of classes .  Using the 2k rule, we find 6 classes would be OK. A histogram and a frequency table follow: Frequency Tabulation for Amount Histogram 1.8 1.9 2 2.1 2.2 Amount 0 4 8 12 16 20 24 frequency
Background image of page 1

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

View Full DocumentRight Arrow Icon
Lower Upper Relati ve Cumul ative Cum. Rel. Class Limit Limit Midpo int Frequ ency Frequ ency Frequ ency Frequ ency at or below 1.8 0 0.0000 0 0.0000 1 1.8 1.8666 7 1.8333 3 0 0.0000 0 0.0000 2 1.8666 7 1.9333 3
Background image of page 2
Percentage Polygon Amount percentage 1.8 1.9 2 2.1 2.2 0 10 20 30 40 50
Background image of page 3

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

View Full DocumentRight Arrow Icon
#3.9 (a) Summary Statistics for MPG Percentiles for MPG
Background image of page 4
Count 16 Average 25.0 Standard deviation 5.95539 Coeff. of variation 23.8216% Minimum 18.0 Maximum 44.0 Range 26.0 Stnd. skewness 4.21644 Stnd. kurtosis 5.99231
Background image of page 5

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

View Full DocumentRight Arrow Icon
Percentil es 1.0% 18.0 5.0% 18.0 10.0% 22.0 25.0% 23.0 50.0% 23.0 75.0% 24.0 90.0% 34.0 95.0% 44.0 99.0% 44.0
Background image of page 6
Mean =25 ; Median = 23; Mode = 23 MPG. 
Background image of page 7

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

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/20/2009 for the course STATS 1181 taught by Professor Darkoh during the Fall '09 term at Langara.

Page1 / 11

as3-083-soln - Stat1181 Assignment3Solutions #2.16(b)...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online