Wednesday

August 27, 2014

August 27, 2014

Posted by **stan** on Wednesday, December 12, 2012 at 3:25am.

A’s B’s C’s D’s F’s

25 35 60 30 20

- statistics -
**PsyDAG**, Wednesday, December 12, 2012 at 11:33amX^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency.

∑ = sum of all the cells.

E = (column total * row total)/grand total

df = n - 1, where n = number of cells

Look up value in X^2 table in the back of your textbook.

**Related Questions**

college - Suppose that, for a certain exam, a teacher grades on a curve. It is ...

Business Statistics - In each case, sketch the two speciﬁed normal curves...

statistics - Percentage grades in a large physics class follow a normal ...

Statistics - Exam Grades. A statistics professor is used to having a variance in...

elementary statistics - A statistics professor is used to having a variance in ...

elementary statistics - A statistics professor is used to having a variance in ...

statistics - Last semester, a certain professor gave 23 As out of 279 grades. If...

Statistics - 1. The mean and standard deviation of the grades of a group of ...

statistics - A professor is interested in the relationship between the number ...

statistics - Give the probability in decimal form (correct to two decimal places...