1. The two-way table displays data about 55 different locations. Scientists have a lie possible chemicals that may influence the health of the coral. They first look at how nitrate concentration might be related to coral health. The table displays the health of the coral (healthy or unhealthy) and nitrate concentration (low or high). low nitrate concentration high nitrate concentration total healthy 20 5. 25 unhealthy 8 22 30 total 28 27 55 a. Complete the two-way relative frequency table for the data in the two-way table in which the relative frequencies are based on the total for each column. low nitrate concentration high nitrate concentration healthy unhealthy total 100% 100% b. When there is a low nitrate concentration, which had a higher relative frequency, healthy or unhealthy coral? c. When there is a high nitrate concentration, is there a higher relative frequency of healthy or unhealthy coral?
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.
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Two way table :
A two way table is a way to display frequencies or relative frequencies for two categorical variables.
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