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To develop a prediction model, the company has gathered data concerning demand for Fresh over the last 33 sales periods.
Evaluate how the Infection Risk (Y) is associated with the following 4 variables.
Run an ordered logit model, in which the dependent variable is V161196: Do you favor or oppose building a wall on the US border with Mexico?
Show the relationship between driver's licence status and gender in the sample of NSW 17-year-olds using a two-way contingency table.
Using frequency distribution of the utilities above, what is the percentage of households who spend on Utilities.
Compute the descriptive statistics and draw a Box-Whisker plot of Expenditures on the following variables (all series in one graph!);
Each month the Bureau of Labor Statistics in the U.S. Department of Labor conducts the "Current Population Survey" (CPS).
Develop two separate research questions using the independent variables and dependent variables you have chosen in Parts B and C.
Develop a 95% confidence interval estimate of the population mean sales price and population mean number of days to sell for both groups.
Create a box plot for each of the three variables, with Gulf View and No Gulf View condos represented by a separate box.
Correlations are used to describe the strength and direction of a relationship between two variables.
For number of cases, calculate the summary statistics of spread: standard deviation, variance, range.
Calculate the mean values and the standard deviation of daily returns for S&P/ASX 200 index for the first year and second year respectively.
What percentage of those who oppose capital punishment report supporting abortion?
Compare the bread prices in Baltimore and Washington, and write your comments based on the average, shape of the distributions.
Conduct a simple linear regression analysis to examine the association between the ‘retention rate' (the independent variable) and the ‘graduation rate'.
Consider a p% confidence interval (CI) for the population mean constructed from a sample of size n, e.g., if p= 95 it 95% CI and if p= 99 it's a 99% CI).
Residual deviances given in software outputs, calculate the maximum likelihood (i.e. the maximum value of l()) under the saturated model.
Compute the population mean of the ‘parent' population (the scores in the table above) and the mean of the sampling distribution of the mean.
a. What is the standard error of the mean in this experiment? b. What is the probability that the sample mean is between $3.78 and $3.86?
Calculate the seasonal index using the link relative method. De-seasonalise the original data.
What are the median and quartile values (approximately) shown in the boxplots?
Now that you are familiar with the basic concepts of statistics, what are some examples of when you have seen or heard statistics used inappropriately?
Assignment Topic: How social media is enhancing the marketing experience of Online Retail.
1. Explain how statistical techniques can solve business problems 2. Identify valid statistical techniques in a given scenario to solve business problems.