Week Five Discussion

This Discussion will give you the opportunity to calculate or identify the three measures of central tendency. You will be asked to select an appropriate real life situation in which one measure would be more appropriate than the other two measures of center. 1. Select a topic of interest to you and record the topic in your posting, for example: “What is the average number of hours people watch TV every week?” Make sure the question you ask will be answered with a number, rather than answers with words. What is the average number of hours people read every week?
2. Write a hypothesis of what you expect your research to reveal. Example: Adults 21 years and over watch an average of 2.5 hours of TV per day. On average, people read about 15 hours per week.
3. Sample at least fifteen people and record their data in a simple table or chart; study the examples from Section 123. PERSON AGE GENDER HOURS READ PER WEEK
1 17 F 8
2 16 F 10
3 14 F 5
4 37 M 4
5 38 F 20
6 33 F 5
7 22 F 30
8 52 F 30
9 40 F 18
10 21 M 3
11 16 F 14
12 13 M 5
13 36 F 25
14 27 F 20
15 43 F 25
4. You can gather your data at work, on the phone, or via some other method. This is your “Sampling Design.” Which of the four sampling techniques best describes your design? Out of the four sampling techniques, the one that I believe best describes my design would be the random sample method.
5. Explain in moderate detail the method you used to gather your data. In statistics this venture is called the “Methodology.” The method I used to gather my data is from my Facebook friends. I do not venture out much so I was going to have a better chance gaining information that way. So, I posted that I needed information on how many hours a week that they read and their age. 6. Make sure you break your...
...results.
1. Describe the measures of centraltendency. Under what condition(s) should each one be used?
Mean Works good when it comes to test scores
Median should be used when describing something like average income.
Mode= is good is you want to see what is you best seeing product in a store situation.
2. Last year, 12 employees from a computer company retired. Their ages at retirement are listed below.First, create a stem plot for the...
...of CentralTendency)
CentralTendency: In a representative sample, the value of a series of data have a tendency to cluster around a certain point usually at the center of the series is usually called centraltendency and its numerical measures are called the measures of centraltendency or measures of location.
Different Measures of Central...
...Assignment on CentralTendency and Dispersion
1. A manufacturer of hand shovels is deciding what length handles to use. Studies of user preference reveal that the average, the median, mean and mode of preferred length are all different. What are the implications of using each of these values? Which value would you decide?
2. A given machine is assumed to depreciate 40 percent in value in the first year, 25 percent in value in the 2nd year and 10...
...to Sell 
Mean  474.0075  Mean  454.2225  Mean  106 
Median  437  Median  417.5  Median  96 
Maximum  975  Maximum  975  Maximum  282 
Minimum  169.9  Minimum  165  Minimum  28 
Standard Deviation  197.29003  Standard Deviation  192.5177534  Standard Deviation  58.2168207 
Based on the chart, the mean was calculated by adding up the sum of the list and divide 40, which the number of the...
...Parameter The mean of population
Statistic The mean of the sample
Variable The age of one child who takes the first ski or snowboard lesson
Data The values of the variable, such as age 7 etc..
EXERCISE 6
A cardiologist is interested in the average recovery period for her patients who have had heart attacks. Define the following in terms of the study. Give examples where appropriate.
Population Patients who have had heart attacks.
Sample A group of the...
...
Subject: Math – Measures of CentralTendency
Grade: 6th
GLE Standard: Mathematics  Data and Probability. 2. Select and use appropriate statistical methods to analyze data. A. Describe and analyze data  find the range and measures of center, including median, mode, and mean.
Materials:
 Bag of mixed candy, or something comparable the students can sort...
...CentralTendency and Measures of Variation
Task 1:
1.1 a.) Define Population: Population is a complete group or collection of items or people selected to be used for a statistical study
b.) Define Sample: Sample is a partial selection or part of the population for which the study uses for information gathering.
1.7 The Neilson study is an inferential study; the results contained on the study are not focused and generalized. The population is not defined...
...Measures of CentralTendency
“Measures of centraltendency (averages) are statistical constants which enable us to figure out in a single effort the significance of the whole.” (Prof Bowley)
The main objectives of measure of centraltendency are
To reduce data in a single value.
To make easy comparisons between data.
There are different types of averages; each has its own business applications.
1....
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