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Based on the Data Set discuss any one of the following (Do
not do all three).
How will you analyze any difference in male and
female head length of bears?
How will you analyze any relationship between length
and weight of bears?
How will you analyze differences in weight by age
of bears?
Your project report MUST include the following:
Include a statement of your research objectives.
The descriptive statistics of the variables (to include)
Provide mean, median, mode, variance, and standard deviation.
Draw necessary charts/graphs
The inferential statistics
State the hypothesis, analyze the data and provide p-value when
appropriate. Use α= 0.05
State your conclusion.
1, Select only one of the 3 options provided for doing the data analysis in the project.
2. After selecting your option, check what variables in the provided data set will help you do the required analysis.
3. In any research we are trying to answer a question. For example, a research may involve examining differences in salary between male and female workers in an industry. Here a research question may be “Do male workers get a higher salary than female workers?” So, try to start with a research question based on the option you have chosen and explain why you think that it is important.
4. Next will be the selection of variables that would enable you to get data for answering your research question. Thus, in the example mentioned above, the relevant variables will be salary of male workers and salary of female workers.
5. Here the relevant data for the variables are already provided and you do not need to explain the data collection process. Here, the first part of data analysis involves providing a descriptive statistics of the data produced by the chosen variables. This would involve providing a summary statistics of the central tendency (mean, median, mode) as well as the dispersion (standard deviation: important use the formula applicable for sample data as the data here comes from a sample). The other part of descriptive statistics is to plot the data in a graph. The choice of graph will be what works best. Thus, if we plot the salary of individual workers we may do so by drawing a line plot separately for male and female workers. If instead we plot the average salary for male and female workers we may do so using a bar chart. There are other options as well and it is up to you what you choose. But explain clearly why you felt that was the best option.
6. In the inferential statistics portion, we would be testing a hypothesis. Follow the various steps involved in testing a hypothesis. First state the Null and the alternative hypothesis in word as well as in symbolic form. The significance level to be used for the test is already specified as 0.05. Then determine what test statistic will be appropriate (e.g, Z or t or ChiSquare). Based on that compute the value of the test statistic. Then determine whether you can reject the Null hypothesis (3 tests can be done, P value, Critical value or Confidence interval). Finally, state in plain English what was the finding from the test. Here keep in mind that you clearly mention the test you are doing (one sample, two sample, regression etc.) and explain why that is appropriate. Also, clearly state whether you are doing a one tailed or a two tailed test. If you use technology (eg Excel) to carry out the test, you do not need to state the formula used. Only mention the steps followed in the technology used and you may copy the results from the technology used. If you do the test computations manually, show the steps and the formula used.
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