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The Australian Bureau of Statistics recently released figures on petrol usage. Following are the 15 leading cities in 2012.
City Value ($ billions) Bourke 7.84 Mt Isa 6.48 Weipa 4.20 Newcastle 4.17 Wollongong 4.00 Kalgoorlie 3.30 Darwin 3.21 Tennant Creek 2.74 Broken Hill 2.08 Perth 2.05 Alice Springs 2.05 Adelaide 1.89 Canberra 1.85 Dubbo 1.81 Albury 1.68
(a) Using the Data Analysis Tool in Excel, calculate the descriptive statistics.
(b) Briefly explain what each of the metrics in the summary statistics means.
(c) Comment on the figures in the report. What are they telling you about this data set? Is it symmetrical, flat, skewed, does it have outliers, and so on?
a. what is the point estimate of the population mean? b. what is the point estimate of the population standard deviation?
questiona soft drink manufacturer is using a winning cap as a sales promotion. the purchaser can get a prize if they
Find out a plausible value r for correlation between vehicle weight and miles per gallon (mpg) shown in the scattergram below?
Both SAT and ACT scores are normally distributed. What is the probability that a randomly selected high school senior's score on the mathematics part of the SAT will be more than 630?
A national water expert is interested in determining the average amount of lead (in ppm, parts per million) that is found in the Houston, Texas drinking water. To conduct her research, she considers only those residential households within the city l..
a super market analysed its most recent sales and determined the relationship between the way a customer paid for the
the national average sat score for verbal and math is 1028. if we assume a normal distribution with o92 what is the
the probability that a household is both prosperous and educated is P (A and B) = 0.082. What is the probability P (A or B) that the household selected is either prosperous or educated.
Their initial expenditure would be drilling, which would cost $80,000. If they strike gas, they would have to spend an additional $50,000 to cap the well and provide for the necessary hardware and control equipment.
What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience?
Divide your data in half, your first 8 observations and your last 7 observations. Then use ANOVA to test to see if there is a significant difference between the two halves of your data. This list of Webpages that Perform Statistical Calculations h..
Combine the following observations with the above data: 34, 46, 92, 51, 65, 76, 53, 99, 40, 46. Does the combined data set look normal?
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