Fig3

The lead in the environment is formed naturally in the earth’s crust mainly as Lead Sulphide. The main exposure channels of lead entering the environment through atmospheric lead is predominantly from automobile emissions. Other lead exposure routes include lead-acid batteries, paint chips, fertilizers, utilized ammunition, pesticides, and other industrial byproducts. The means of conveying lead from key emission sources is mainly through the air. Concerning the sources of lead in drinking water, normally lead reaches into the residents’ water after it is channeled from their water treatment plant or the wells. To be more precise, the source of lead in people’s water supply largely emanates from their households’ pipes or lead solder from plumbing. The most typical cause of the lead formation is from the corrosion reaction by the lead pipes or solders and the water. The acidity as a result of the low pH, dissolved oxygen, and little mineral contents in the water are main reasons of the corrosion. The lead amounts in the water become high if the water spends a long duration of time stagnated inside the old pipes.

Question 4: The mode is the most frequently occurring value in a set of data so here the mode is 178 so the answer is e.

Problem 3-4: Determining S was easy, however displaying it in a Venn diagram proved elusive. Eventual I went with the simplest solution which was a U box and over lapping A and B circles with everything in B and not in A shaded. Pretty sure this was the correct

11. Make up a scatter diagram with 10 dots for each of the following situations:

8. Review the following frequency distribution. Create a histogram either by hand or by using some other

In 2000, WHO assessed the global burden of disease due to a number of risk factors associated with lead. (3)

The large majority of the city was in the 60-70th percentile for lead paint, with a few areas in the 90-95th percentile and the 95-100th percentile. After further evaluation there is a larger group of people in New Philadelphia with a higher risk of having lead in their home. The RMP proximity indicator showed that most of the area was in the 90-95th percentile. The entire city was in the 80-90th percentile for the PM 2.5. I did not expect these indicators to be as similar as they are, however I was not surprised that the indicator for PM 2.5 was higher in Jackson than New Philadelphia because the population is greater.

b) (10 points) Based on your results in a), graph publishers on a bubble chart using the

Stick Figure by Lori Gottlieb is a first person account of a young girl and her battle with anorexia nervosa. The book is composed of diary entries from when Lori was a young girl, at age eleven. By seeing her personal thoughts and stories from the time when she was battling this disorder gives us a very close look at what drove her obsession with being thin: mainly her mother and peers, who were also obsessed with looking “perfect”. In Stick Figure, we follow Lori all the way from the first time she begins to think she should diet through her eventual hospitalization for the eating disorder. There are many tell-tale signs of the disorder viewed along the way, which are

33 3.2.2 Sampling details .......................................................................................35 3.3 Data collection

5.The three patterns of distribution are clumped, random, and uniform. A clumped pattern of distribution is when

Explain each sampling technique discussed in the “Visual Learner: Statistics” in your own words, and give examples of when each technique would be appropriate.

In the 1950’s and 1960’s, lead poisoning was found to be prevalent in the slums of the inner cities. These areas were referred to as the "lead belt" because these run down houses were havens for lead exposure. The flaking paint on walls, the chipping plaster ceilings, and the old furniture exposed these children to a real hazard. Pica was an important contributing factor and children, ages 1 to 3 were at the greatest risk. Siblings in these situations were often affected and recurrence was common because the lead paint was not removed. The prognosis for these children became worse with each recurrence (Chisholm, 1982).

1. Barry reached into his bag of M&Ms and pulled out three pieces of candy, each of which was red. All of the M&Ms in Barry's bag are the (sample/population) of M&Ms. The three that he took out are the (sample/population).

1)The field of view in Figure 1-2 is a factor of 100 larger than the field of view in Figure 1-1. What aspects of Figure 1-2 increased by a factor of 100 relative to Figure 1-1? Did the height increase by that amount? The diameter? The area?