# Project #58449 - Chi Square

My Budget is 25-30 All work must be shown and the formula listed must be the one used.

The mix of Webster Students in 2007 had been

50% main campus and St. Louis
40% extended campuses
10% online
number of students surveyed :100

After advertising its online programs on TV and the internet the study in 2009 found

40% main campus and St. Louis
30% extended campus
30% online
number of students surveyed:300

Is the data statistically significantly different? Calculate your chi square. Begin with the formula, show your calculations and complete the formula.

Chi Square (  )
(pronounced with a "KI" - rhyming with pie)

• Each category is called a cell.

• You will compare your calculated score to your critical score just like other tests of significance.

First, calculate degress of freedom (df), which equals the number of cells minus one.

 df = k - 1

Steps to finding Chi Square

1.     Secure historical percentages and place in cells: percent should total 100%.

2.     Determine observed % in the cell.

3.     Compute expected frequency by multiplying sample by historical %.

4.     Perform the following formula:

 Subject Mathematics Due By (Pacific Time) 02/20/2015 12:00 pm
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