The bar graph shows a company's income and expenses over the last 5 years. Income and Expenses 1,000,000 800,000 600,000 400,000 KEY 200,000 Income Expenses 0. 3 Year Which statement is supported by the information in the graph? A Expenses have increased $200,000 each year over the last 5 years. B The income in Year 5 was twice the income in Year 1. C The combined income in Years 1, 2, and 3 was equal to the combined expenses in Years 1, 2, and 3. D The combined expenses in Years 3 and 4 were $300,000 more than the combined income in Years 3 and 4. Amount ($)
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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