# Math(statisc)

posted by .

Select a variable (mean, proportion, variance or standard deviation) of interest to you and collect data consisting of at least 30 values.

Define the variable.
Define the population.
Describe how the sample was selected.
Use Microsoft Excel (and MegaStat if at all possible) to determine the confidence interval.
Comment on what you find.

• Math(statistics) -

What variable do you want to select? Easier ones might involve heights or ages of students in your class to use as a sample for your college population.

• Math (statistics) -

In this assignment, you have to decide what you are going to measure and make your own measurements.

You could choose, for example, number of words in thirty consecutive sentences in a book or newspaper article.

For the confidence interval calculation, try
http://www.dimensionresearch.com/resources/calculators/conf_means.html

You can find many other calculating tools with a Google search.

## Similar Questions

1. ### stats

Consider an infinite population with 25% of the elements having the value 1, 25% the value 2, 25% the value 3, and 25% the value 4. If X is the value of a randomly selected item, then X is a discrete random variable whose possible …
2. ### math

Select a variable (mean, proportion, variance or standard deviation) of interest to you and collect data consisting of at least 30 values. Define the variable. Define the population. Describe how the sample was selected. Use Microsoft …

Select a variable (mean, proportion, variance or standard deviation) of interest to you and collect data consisting of at least 30 values. Define the variable. Define the population. Describe how the sample was selected. Use Microsoft …
4. ### math

Select a variable (mean, proportion, variance or standard deviation) of interest to you and collect data consisting of at least 30 values. Define the variable. Define the population. Describe how the sample was selected. Use Microsoft …
5. ### Math

Select a variable (mean or proportion) of interest to you and collect or find the data. BEFORE you collect the data, decide what a likely mean or proportion might be. Then address the following (and a little more) in your project. …
6. ### Math

Select a variable (mean or proportion) to determine if there is a difference in the two groups. Samples must be independent. Select a sample of data values (20 to 50) for each group. Then address the following (and a little more) in …
7. ### pLZ help

Select a variable (mean or proportion) to determine if there is a difference in the two groups. Samples must be independent. Select a sample of data values (20 to 50) for each group. Then address the following (and a little more) in …
8. ### math

Select a variable (mean or proportion) to determine if there is a difference in the two groups. Samples must be independent. Select a sample of data values (20 to 50) for each group. Then address the following (and a little more) in …
9. ### statistics

A specific study found that the average number of doctor visits per year for people over 55 is 8 with a standard deviation of 2. Assume that the variable is normally distributed. 1. Identify the population mean. The population mean …
10. ### Statistics

In an essay of 250-500 words, thoroughly address the following items and respond to the related questions: 1.Define the term standard deviation. Why is it important to know the standard deviation for a given sample?

More Similar Questions