Posted by **Maria Elizabeth** on Sunday, December 9, 2012 at 2:43pm.

A number of grade school students were asked about their perceived math ability and the results are in the table below.

Below Average = BA

Average = A

Above Average = AV

BA A AV

Girls 61 54 21

Boys 43 61 42

Test at the 0.01 level if there is a difference between girls and boys with respect to their perceived math ability.

- Statistics -
**PsyDAG**, Monday, December 10, 2012 at 11:55am
Use the Chi-square (X^2) method.

X^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.

## Answer This Question

## Related Questions

- Probability and statistics - 5. The probabilities that the lifetime of a ...
- Maths - In a class of 75 students,15 are above average,45 are average and the ...
- Math - average grade - Does anyone know how to calculate average point grade? I ...
- Probability and statistics - The probability that the life time of randomly ...
- math - Suppose the daily high temperature in a town is 3 degrees above average ...
- math - In his NPR radio program "A Prairie Home Companion," Garrison Keillor ...
- statistics - Employees are evaluated as below average, average, or above average...
- Computer Programming - Professor Merlin has asked you to help him. He has 100 ...
- working with data - josephs final averages in science class are shown in the ...
- Statistics - `The average grade point average (GPA) of undergraduate students in...

More Related Questions