I need help in understanding what chapter the question 5, 6, and 7 is about.

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COMM 215: Business Statistics Section EC Winter 2021 Data Analysis Project (8%) Topic: Employee Satisfaction at NAFUZ Inc. Data le: EmployeeSatfsfactinnxlsx Report uploading Deadline: April 13, 2021, before 24:00 Description Nasee Inc. runs stores with operations in several major locations. Recently, there have been several instances of work slowdown and walk out by protesting employees unhappy with management's response to their demands. Concerned about the issues and the current degree of employee satisfaction, management has initiated a study based on a sample of its employees from the three major work locations: LociA, LociB, and LociC. As part of this study, employees in the sample were asked to indicate their degree of satisfaction in their work (WORK), their pay (PAY), and their opportunities for promotions (PROMO). Each of the three aspects of job satisfaction was measured on a scale from 0 to 100, with larger values indicating higher degrees of satisfaction. The data collected also show the following characteristics of employees: employee ID; job type (J OBTYPE: Managerial, Supervisory, Clerical and Technical), level of attained education (EDUC: HSDIP=High School Diploma, COLLEGE level, BAMA=Bachelors or Master's Degree). The goal of the study is to identify factors that inuence employee satisfaction and to develop an appropriate model to explain the issues. For recent studies on 'Employee Job Satisfaction and Engagement', you may refer to the link below and some of the references cited in this report. h s:ffwww.shrm.or -toda ftrends-and-forecastin research-and-surv stocumentleUl -Em lo ee-Job-Satisfaction-and-En a ement- Rep_ort.pdf Managerial Report Use appropriate (applicable) methods of descriptive statistics, including tables andplats, to summarize the data (depending on the data type - quantitative continuous or discrete and qualitative or categorical). That is, prepare appropriate tables of descriptive statistics (mean, standard deviation, coefcient of variation, quartiles, IQR, correlations) and appropriate plots (histograms, dot plots, bar/pie charts, stem plots, boxplots, scatterplots) of the variables, overall and when appropriate, by categories. You are expected to produce displays that will allow you to describe the distribution in terms of symmetry, dispersion, and outlying observations. Present the summaries of statistical results that will be beneficial in communicating to others. The results must be fully discussed and clearly explained in context addressing the issues. 5. Develop and discuss the 95% condence interval estimates of job satisfaction (work, pay, and promotion) for (i) all employees; (ii) employees from each location; (iii) employees from each job type; (iv) employees from each education level. 7. What can be said about the relationships between the job satisfaction variables? Discuss based on scatter plots and correlations of the relevant variables