How to do expected frequency for chi^2 goodness fit test

2 answers:

4 0

How do you find the expected frequency in a chi square goodness of fit?
Pearson's chi-square goodness of fit test statistic is: - where Oj are observed counts, Ej are corresponding expected count and c is the number of classes for which counts/frequencies are being analysed.
...
Chi-square Goodness of Fit Test.
Value Observed frequency Expected frequency
3 29 14.96
4 8 5.61

vitfil [10]3 years ago

4 0

Step-by-step explanation:

So basically you're going to start with your (expected value - observed value) squared

(O-E)²

You're then gonna divide that by your expected value that you just used

(O-E)²/E

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Given that m angle G- 81", what is m angle I?<br> A)81"<br> B)89<br> C)91<br> D)99

seraphim [82]

Answer:

$\text{D) }99^{\circ}$

Step-by-step explanation:

Define a cyclic quadrilateral by a quadrilateral that is circumscribed by a circle. In this case, since the quadrilateral shown is circumscribed by a circle, it is a cyclic quadrilateral.

A property of all cyclic quadrilaterals is that their opposite angles are supplementary, meaning they add up to 180 degrees. Since $\angle G$ and $\angle I$ are opposite angles in the quadrilateral, they must be supplementary. Therefore, we have the equation: