STAT200: Assignment #3 – Inferential Statistics Analysis and Writeup – Instructions Page 1 of 5STAT200 Introduction to Statistics Assignment #3:
Inferential Statistics Analysis and Writeup Purpose:
The purpose of this assignment is to develop and carry out an inferential statistics analysis plan and write up the findings. There are two main parts to this assignment:
●Part A: Inferential Statistics Data Plan and Analysis
●Part B: Write up of ResultsPart A: Prepare Data Plan, Analyze Data, and Complete Part A of the Assignment #3 Template
➢Task 1:Select Variables. Review the variables you used for assignments #1 and #2. Select your qualitative socioeconomic variable as your grouping variable and the two expenditure variables from the variables used in these previous assignments. Fill in Table 1: Variables Selected for Analysis with name, description, and type of variable (i.e., qualitative or quantitative).
➢Task 2:Select and Run a One Sample Confidence Interval Analysis. For one expenditure variable, select and run the appropriate method for estimating a parameter, based on a statistic (i.e., confidence interval method). Complete Table 2: Confidence Interval Information and Results, which follows the format outlined by Kozak and the course’s problem-solving approach, including:○Random variable stated in words○Confidence interval method, including rationale and assumptions○Method used for analyzing data (i.e., web applets, Excel, TI calculator, etc.). ○Results obtained○Interpretation
➢Task 3: Select Two Sample Hypothesis Test. Using the second expenditure variable (with the socioeconomic variable as the grouping variable), select and run the appropriate method for making decisions about two parameters relative to observed statistics (i.e., two sample
STAT200: Assignment #3 – Inferential Statistics Analysis and Writeup –
Instructions Page 2 of 5hypothesis test method).
Complete Table 3: Two Sample Hypothesis Test Analysis, which follows the format outlined by Kozak and the course’s problem-solving approach, including:
Step 2: Write Up Results and Complete Part B of the Assignment #3 TemplateFor this 1 to 2 page section, refer to the inferential statistics data plan and computations done for Part A of this assignment. Address the following area:
➢Introduction. Based on the scenario you submitted for the second assignment, provide a brief description of scenario, including the variables that were used in this analysis. Include a completed “Table 1: Variables Selected for Analysis to show the variables you selected for analysis.
➢Data Set Description and Method Used for Analysis. Briefly describe the data set, using information provided with data set and write up in Assignment #2. Also describe what method(s) (i.e., free web applets, Excel, TI Calculator) you used to analyze the data.
➢Results. In this section, you will report the results of your inferential statistics data analysis. For the Confidence Interval Analysis, write one paragraph that includes:o Statistical method used, including rationale and whether assumptions were met.o Statistical Interpretation. The statistical interpretation is that the confidence interval has a probability (1−α, where α is the complement of the confidence level) of containing the population parameter.o Real World Interpretation. Explain the results in everyday language. Recommend reviewing the text and information from the classroom for examples on how to report results in everyday language.
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