Statistics Analysis 2

7/11/2018 Grades - STAT 200 7362 Introduction to Statistics (2185) - UMUC Learning Management System

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Assignment

#1:

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Data

Analysis

Proposal

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Kyami Clarke : ( Selec�on of related variables (10 pts): 7 Measure of central tendancy and dispersion (15 pts): 12 Graphs and/or tables (15 pts): 13 Wri�ng quality (10 pts): 9 ); Total:( 41 ); Comments: The only qualita�ve data is "marital status". Food and entertainment are not qualita�ve data, they are quan�ta�ve. Central tendancy is not a measure, should be mean, median, mode and standard deviaton.

Assignment

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Sta�s�cs

Data

Analysis

Writeup

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Assignment

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Final Exam 0 / 100 0 / 20 0 %

STAT200: Assignment #1 - Descriptive Statistics Analysis Plan - Template Page 1 of 4

University of Maryland University College STAT200 - Assignment #1: Descriptive Statistics Data Analysis Plan

Identifying Information Student (Full Name): Kyami Clarke Class: STAT 200 7363 Introduction to Statistics Instructor: Dr. Jing Gao Date: June 27th, 2018 Scenario: Please write a few lines describing your scenario and the four variables (in addition to income) you have selected. Use Table 1 to report the variables selected for this assignment. Note: The information for the required variable, “Income,” has already been completed and can be used as a guide for completing information on the remaining variables. Table 1. Variables Selected for the Analysis

Variable Name in the Data Set

Description (See the data dictionary for describing the

variables.)

Type of Variable (Qualitative or Quantitative)

Variable 1: SE - Income

Annual household income in USD. Quantitative

Variable 2: SE -Age Head Household

Age of the Head of Household Quantitative

Variable 3: SE - Family Size Total Number of People in Family Quantitative

Variable 4: USD - Food Total Amount of Annual Expenditure on Food

Qualitative

Variable 5: USD - Entertainment

Total Amount of Annual Expenditure on Entertainment

Qualitative

Reason(s) for Selecting the Variables and Expected Outcome(s):

1. Variable 1: “Income” – To show how much income in a household.

2. Variable 2: “ Age Head Household “ – The age of the head of household.

3. Variable 3: “ Family Size “ - The size of the household.

STAT200: Assignment #1 - Descriptive Statistics Analysis Plan - Template Page 2 of 4

4. Variable 4: “ Food “ - To show food expenditures paid out annually.

5. Variable 5: “Entertainment “ - To show entertainment expenditures paid out annually.

Data Set Description:

Proposed Data Analysis:

Measures of Central Tendency and Dispersion

Complete Table 2. Numerical Summaries of the Selected Variables and briefly explain why you choose

those measurements. Note: The information for the required variable, “Income,” has already been

completed and can be used as a guide for completing information on the remaining variables.

Table 2. Numerical Summaries of the Selected Variables

Variable Name Measures of Central Tendency and Dispersion

Rationale for Why Appropriate

Variable 1: “Income”

● Number of Observations

● Median ● Sample Standard

Deviation

I am using median for two reasons: 1. If there are any outliers or the data is not

normally distributed, the median is the best measure of central tendency.

2. The variable is quantitative.

I am using sample standard deviation for three reasons:

1. The data is a sample from a larger data set.

2. It is the most commonly used measure of dispersion.

3. The variable is quantitative.

Variable 2: Age of the Head of Household

• Central Tendency • Sample Standard

Deviation

• The single value that represents the center value of the data set.

• The most commonly used measure of dispersion.

Variable 3: Family Size • Central Tendency • Sample Standard

Deviation

• The single value that represents the center value of the data set.

• The most commonly used measure of dispersion.

STAT200: Assignment #1 - Descriptive Statistics Analysis Plan - Template Page 3 of 4

Variable 4: Food • Central Tendency • Sample Standard

Deviation

• The single value that represents the center value of the data set.

• The most commonly used measure of dispersion.

Variable 5: Entertainment

• Central Tendency • Sample Standard

Deviation

• The single value that represents the center value of the data set.

• The most commonly used measure of dispersion.

Graphs and/or Tables

Complete Table 3. Type of Graphs and/or Table for Selected Variables and briefly explain why you

choose those graphs and/or tables. Note: The information for the required variable, “Income,” has

already been completed and can be used as a guide for completing information on the remaining

variables.

Table 3. Type of Graphs and/or Tables for Selected Variables

Variable Name Graph and/or Table Rationale for why Appropriate?

Variable 1: “Income”

Graph: I will use the histogram to show the normal distribution of data.

Histogram is one of the best plot to show the normal distribution of quantitative level data .

Variable 2: Age of the Head of Household

Graph: I will use the histogram to show the normal distribution of data.

Histogram is one of the best plot to show the normal distribution of quantitative level data .

Variable 3: Family Size Graph: I will use the histogram to show the normal distribution of data.

Histogram is one of the best plot to show the normal distribution of quantitative level data .

Variable 4: Food Graph: I will use the histogram to show the normal distribution of data.

Histogram is one of the best plot to show the normal distribution of quantitative level data .

Variable 5: Graph: I will use the histogram to Histogram is one of the best plot to show

STAT200: Assignment #1 - Descriptive Statistics Analysis Plan - Template Page 4 of 4

Entertainment show the normal distribution of data.

the normal distribution of quantitative level data .