University of Maryland University College
STAT200 – Assignment #1: Descriptive Statistics Data Analysis Plan
Identifying Information
Student (Full Name):
Class:
Instructor:
Date:
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: “Income”
|
Annual household income in USD. | Quantitative |
| Variable 2: | ||
| Variable 3: | ||
| Variable 4: | ||
| Variable 5: |
Reason(s) for Selecting the Variables and Expected Outcome(s):
- Variable 1: “Income” –
- Variable 2: “ “ –
- Variable 3: “ “ –
- Variable 4: “ “ –
- Variable 5: “ “ –
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: | ||
| Variable 3: | ||
| Variable 4: | ||
| Variable 5: |
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: | ||
| Variable 3: | ||
| Variable 4: | ||
| Variable 5: |