Chi-Square Statistics - HP 12c Solutions Handbook

4. Key in the respective frequency and press
number of data points entered.
5. Repeat steps 3 and 4 for each data point.
6. To calculate the mean, press
7. Press
8. Press
9. For a new case, go to step 2.
Keystrokes
CLEAR
190
54
195
32
200
88
206
92
05

Chi-Square Statistics

The chi-square statistic is a measure of the goodness of fit between two
sets of frequencies. It is used to test whether a set of observed
frequencies differs from a set of expected frequencies sufficiently to reject
the hypothesis under which the expected frequencies were obtained.
In other words, you are testing whether discrepancies between the
observed frequencies (O
significant, or whether they may reasonable be attributed to chance. The
formula generally used is:
to find the standard deviation.
to find the standard error of the mean.
Display
1.00
2.00
3.00
4.00
199.44
5.97
0.37
) and the expected frequencies (E
i
. The display shows the
05
First data pair.
Second data pair.
Third data pair.
Total number of data sets.
Average monthly rent (maen).
Standard deviation.
Standard error of the mean.
110
.
) are
i