MAT 109 DATA PROJECT FORMAT: The 5 data analysis sections of the project are to be submitted in a single EXCEL spreadsheet (workbook, saved as Excel file) with 5 separate tabs, one for each section and labeled appropriately. The infographic will be a single 8.5 x 11 page, either a WORD document or PowerPoint slide […]
Construct a confidence interval for the difference of the two means using the method described in class for normal data with different variances.
Assignment 5 Confidence intervals Show all work, when statkey is used, include a screenprint of your output. If you do not include the screenprint it counts as not working the problem. 1: The data for this problem is in ques1.csv in canvas Download the data to your computer and upload it to statkey, bootstrap confidence […]
Provide and discuss an example of two variables that are associated, but not by a cause and effect relationship.
Statistics Integration 7 We know association does not imply causation, but what does this mean in your own words? Provide and discuss an example of two variables that are associated, but not by a cause and effect relationship. Describe what would happen if you assumed a cause and effect relationship in your example.
Visit the Happiness Index website, explore, and write a report based on the data provided on the website. What are the limitations of the entire process?
Happiness Index Visit the Happiness Index website, explore, and write a report based on the data provided on the website. The paper must address the following issues: What are the data used and how the data have been collected? How the data have been processed to derive the Happiness Index? What are the limitations of […]
Compute the mean, median, mode, range, sample standard deviation, and sample estimate of the population standard deviation for the data in Table 1 (below).
ASSIGNMENT Compute the mean, median, mode, range, sample standard deviation, and sample estimate of the population standard deviation for the data in Table 1 (below). Use your calculator and scrap paper for computations as necessary. Write your answers in the spaces provided.
If 10 of these eco-cars are randomly selected from this population, what is the probability the mean MPG will be between 30.12 mpg and 32.27 mpg?
ASSIGNMENT Given: MPG (mile per gallon Fuel efficiency) of a certain model eco-car is normally distributed with mean of 31.1 and standard deviation of 1.245. Round answers to nearest thousandth and keep in decimal format. Give full solution for each of these parts (and note the start to Part A, versus the start of Part […]
How much error do we expect in the sample proportions if the 30% is correct for the population overall? Use the applet and a give an error based on 2 standard deviations.
Module 15 Homework 1 – Distribution of Sample Proportions Progress Check Use this activity to assess whether you and your peers can: Use a simulation to obtain a sampling distribution along with its mean, standard deviation, and error. Interpret the mean and error for a sampling distribution. Prompt The National Health Survey uses household interviews […]
Define “tall parents” and “short parents” according to your data. Then divide your sample into these two groups and report relevant statistics for the adult children and for parents in each group.
Stata about the Econometrics Part 1: Analysis with Galton’s original data set Galton’s work on children and parents’ height was published in: Galton, F. (1886): “Regression towards mediocrity in hereditary stature”, Journal of the Anthropological Institute, 15: 246-63. In this first part of the project you are asked to reconstruct the original data from this […]
Calculate and present the three Measures of Central Tendency: mean, median, and mode. Provide both the value of the statistics as well as an analysis of what they mean in terms of understanding the sample.
Outline of Material to Present This assignment is broken down into four parts: Collection of Data, Organization of Data, Analysis of Data, and Conclusion/Recommendations. Each part has a subset of questions and issues you must address. Ensure that your report includes a section for each of the 4 Parts listed below, and that each part […]
Construct and interpret a confidence interval to estimate the mean height of the population. Write the formula for the confidence interval and then substitute your appropriate numbers.
Correlation To study about the correlation between height and shoe size, you need to collect a sample of nine (9) people using a Systematic Sampling method. What is the population of people? Where and how are you going to collect your sample? Does your sample accurately represent your population? Why or why not? Collect the […]