QNT/275 Week 2
Activity Data Set
Option#1: 868 words!
Option#2: 1,173 words!
Resource: University of Phoenix Material: Data Set
Review the following business scenario:
You are the manager in a small town in the lake district of a Midwestern
state that enjoys a robust tourist season during the summer months but
has only a small population of residents during the off season. The
Littletown Café adjusts the levels of staff according to the time of year
to coincide with the number of guests, with the tourist season typically
starting around Memorial Day each year. One wait staff employee can
serve 50 guests. When a bus staff employee is added, the pair can
serve 75 guests. At 76 guests, the café adds a second wait staff
employee, for a total of 2 waiters and one busser. Analysis of guest
numbers can support future decisions about scheduling wait staff,
dishwashers, and bus staff for the café.
Download the data set.
Review the data in the data set.
Create a 875-word report in which you do the following:
• Explain why this is (or is not) a suitable sample of quantitative data
for the business scenario.
• Evaluate the factors that would affect the validity of the data set.
• Evaluate the factors that would affect the reliability of the data set.
• Explain the steps you took to arrive at your conclusion about validity
and reliability.
• Display the data set in a chart
• Explain briefly why that chart type was selected
• Calculate the measures of central tendency and variability (mean,
median, mode, standard deviation) for the data.
• Explain the steps you followed to come your answer.
• Interpret the measures of central tendency and variability. What are
three conclusions you can draw based on the data analysis?
Format your assignment consistent with APA guidelines.
Click the Assignment Files tab to submit your assignment.
Collaborative Discussion: Descriptive Statistics | REQUIRED
Read Case Study 3.3 in Ch. 3 of Essentials of Business Statistics found on page 98.
Click the Fort Myers Sales Data Set link.
Calculate descriptive statistics:the mean, median, mode, and standard deviation in the two sample periods (January
and July).
Discuss one of the following:
• Identify what changes occurred in the Fort Myers housing market during the 6-month period.
• Explain what conclusions you can draw from the data.
• Identify what additional data you might want to understand the housing market better.
• Explain what role descriptive statistics play in understanding the housing market.
Learning Activity: Obtaining a Suitable Sample
Watch the "Obtaining a Suitable Sample" video.
Consider the following as you watch:
• Discuss the difference between convenience and random sampling.
• Explain how you can obtain a sample size representative of a population.
• Provide three examples.
• Explain why a sample is used in place of the population.
Learning Activity: Measuring Central Tendency and Variability
Watch the "Measuring Central Tendency and Variability" video.
Consider the following as you watch:
• Define the three standard measurements of the central tendency and provide example of each.
• Explain when you might want to use a median number.
• Provide an example.
• Define a standard deviation and what a standard deviation shows, provide an example.
Learning Activity: Mean, Median, and Variability
Watch the "Measuring Central Tendency and Variability" video.
Consider the following as you watch:
• Define the three standard measurements of the central tendency and provide example of each.
• Explain when you might want to use a median number.
• Provide an example.
• Define a standard deviation and what a standard deviation shows, provide an example.
Learning Activity: Mean, Median, and Mode
Watch the "Statistics Intro: Mean, Median, and Mode" video.
Consider the following as you watch:
• Explain how mean is calculated.
• Explain how a median is calculated with an even number list.
• Define an array.
• Provide an example.
• Define a mode.
• Identify if you can have more than one modal number in a set of data.
Learning Activity: Finding the Range and Mid-Range
Watch the "Finding the Range and Mid-Range" video.
Consider the following as you watch:
• Define a range and provide two examples.
• Calculate a mid-range and provide two examples
Individual: Week 2 Quiz
Includes Correct Answers!
1. In order to summarize qualitative data, a useful tool is a __________.
2. The accompanying chart shows the numbers of books written by each author in a collection of cookbooks. What type of chart is this?
3. A recent survey of 200 small firms (annual revenue less than $10 million) asked whether an increase in the minimum wage would cause the firm to decrease capital spending. Possible responses to the survey question were: "Yes," "No," or "Don't Know." These data are best classified as ____________.
4. ABC Plumbing wants to understand its customers’ perceptions of the quality of the company’s plumbing service calls. They plan to survey a sample of its customer base. What will ABC need to do to ensure that their data is valid and reliable?
5. A stem-and-leaf diagram is constructed by separating each value of a data set into two parts. What are these parts?
6. A population consists of _________________.
7. Which of the following variables is qualitative?
8. Which of the following represents a population and a sample from that population?
9. Which of the following variables is quantitative? |