Expected Frequency for Winter Expected Frequency for Spring Expected Frequency for Summer Expected Frequency for Fall
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
![Is there a baby season? Or does every season have the same number of babies born each season? The table
below shows the number of babies, 928 that were born in each season. Complete the rest of the table by
filling in the expected frequencies:
Frequencies of Babies Born in Each Season
Outcome
Frequency
Expected Frequency
Winter
221
Spring
230
Summer
244
Fall
233
R vector data: 221,230,244,233
Excel data
Expected Frequency for Winter
Expected Frequency for Spring
Expected Frequency for Summer
Expected Frequency for Fall
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