# Math(statisc)

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.

1. 👍
2. 👎
3. 👁
1. 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.

1. 👍
2. 👎
2. 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.

1. 👍
2. 👎

## Similar Questions

1. ### STATISTICS

Consider a binomial random variable where the number of trials is 12 and the probability of success on each trial is 0.25. Find the mean and standard deviation of this random variable. I have a mean of 4 and a standard deviation

2. ### statistics

Certain statistics measures are unbiased. Which of the following show three unbiased estimators? a. variance, standard deviation, median b. mean, variance, proportion c. mean, median, range d. range, standard deviation, median

3. ### Consumer math

Complete the chart to find the mean, variance and standard deviation. Remember to use commas and round numbers to the nearest tenth. X _ X _ X - X _ (X - X)2 1. 900 = 466.2 = The mean is 2. 35 = -398.8 = 159,041.4 The median is 3.

4. ### college math

20. Calculate the range, variance, and standard deviation of the following data set: 5, 5, 6, 6, 6, 8, 8, 8, 8, 10, 10, 11, 12, 12, 20 (Points: 5) Range = 15; Variance = 225; Standard Deviation = 7.5 Range = 3.85; Variance = 14;

1. ### Statistics

Working of a problem--I have found the mean, variance and the standard deviation from the following info: The probability that a cellular phone company Kiosk sells X number of new phone contracts per day is shown below---- X=4, 5,

2. ### Statistics

A college statistics class conducted a survey of how students spend their money. They asked 25 students to estimate how much money they typically spend each week on fast food. They determined that the mean amount spent on fast

3. ### Statistics

find the 90% confidence interval for the variance and standard deviation of the ages of seniors at Oak Park College if a sample of 24 students has a standard deviation of 2.3 years. Assume the variable is normally distributed. Can

4. ### Algebra

Use a calculator to find the mean and standard deviation of the data. Round to the nearest tenth. 6,7,19,7,18,7 A. mean = 9; standard deviation = 26.4 B. mean = 11.9; standard deviation = 26.4 C. mean = 10.6; standard deviation =

1. ### Statistics

The table below shows the LOS for a sample of 11 discharged patients. Using the data in the table, calculate the mean, range, variance, and standard deviation, and then answer questions e and f. Round the variance and standard

2. ### Statistics

1,3,5,3,2,29,3,4,2,1,2 Mean 5 Range 28 Variance 64.8 Standard Deviation 8.0 1.What value is affecting the mean and SD of this distribution? 2.Does the mean adequately represent this disribution? If bot, what would be a better

3. ### math

The following is a set of data from a sample of n = 5: 7 4 9 8 The following is a set of data from a sample of n = 5: 7 4 9 8 2 a. Compute the mean, median, and mode. b. Compute the range, variance, standard deviation, and

4. ### Statistics Range, Variance, and Standard Deviation

26. Flight Data: Find the range, variance, and standard deviation. Express answers using appropriate units, such as "minutes." Refer to Data Set 15 in Appendix B and use the times required to taxi out for takeoff. Flight 1 1 1 1 1