How many colleges are included in the Florida dataset? (Hint: You need to add up the counts above each of the bars.) How many colleges are included in the New York dataset? What percentage of the Florida colleges have tuition and fees below $15,000 per year? Round the percentage to one decimal place.
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.
Answer the questions below by looking at the histograms of 2015-16 college tuition and fees for Florida and New York below. Notice that each bar of the histogram displays an exact count of colleges so that estimation is not necessary.
How many colleges are included in the Florida dataset? (Hint: You need to add up the counts above each of the bars.)
How many colleges are included in the New York dataset?
What percentage of the Florida colleges have tuition and fees below $15,000 per year? Round the percentage to one decimal place.
What percentage of the New York colleges have tuition and fees below $15,000 per year?
%
What percentage of the Florida colleges have tuition and fees of $40,000 per year or more? Round the percentage to one decimal place.
What percentage of the New York colleges have tuition and fees or $40,000 per year or more?
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