STAT ASSIGNMENT - STAT1070 ASSIGNMENT ONE Question One 1a)...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
STAT1070 ASSIGNMENT ONE Question One 1a) Mortality - Continuous Variable. Description From this Histogram we can clearly see the distribution of data amongst the 61 towns. The graph shows us the rate of mortality in groups of 100. The highest rate of mortality be- ing 1987, and the lowest being 1096. The distribution is set out with the highest mortality rates gravitating towards the middle, with the mean being 1525.8197 and the median being 1555. The shape of the distribution is similar to a bell curve, however as the numbers drop in the direct middle, it can also be described as Bimodal, or double peaked.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Calcium - Continuous Variable Description From this histogram we can see the dis- tribution of Calcium Concentration in parts per million (ppm). The maximum variable is 138, while the minimum is 5. The distribution is skewed to the right, and thus called a Right Skew Distribution, as the tail skews away to the right. The mean in this particular variable is 48.311475, with the median being 39. Derby - Nominal
Background image of page 2
Description From this Pareto Plot Chart, we can see the distribution between the two counties in terms of both percentage and count. We can see that the North has the largest scoring in both Count and Percentage, by both looking at the counts on both opposite axis, as well as the general size of the coloured columns themselves. The use of a Pareto Plot is the most effective way to outline the immediate difference when looking at a Nominal Vari- able. In this case, as there are only two out- comes in the variable, the chart is extremely effective in what it is trying to achieve. We can clearly see here that the distribution fa- vours the North over the South. 1b) Description - This is a scatter plot depicting the relationships between Mortality and Calcium in Parts Per Million (ppm). It shows us that there is a strong relationship between calcium and mortality rates, as well as noting the county by using colour. (North = Red, South = Blue). It is quite clear from this graph that those counties with a lower Calcium PPM generally have a higher mor- tality rate, while those with a higher Calcium PPM generally have a lower mortality rate. Description - This Oneway Analysis describes to us the difference in mortality rate amongst the different counties that are North or South of Derby. We can clearly see from
Background image of page 3

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

View Full DocumentRight Arrow Icon
this graph that mortality rates are generally higher in the towns North of Derby, and generally lower in towns south of Derby. Description -
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

This document was uploaded on 10/26/2011 for the course DAS 234 at Punjab Engineering College.

Page1 / 7

STAT ASSIGNMENT - STAT1070 ASSIGNMENT ONE Question One 1a)...

This preview shows document pages 1 - 5. Sign up to view the full document.

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