A deep-sea exploration vehicle collects samples from the ocean floor at various depths. Data for four samples are shown in the table below. Depth (meters, relative to sea level) -2310 Sample Description Crab (unknown species) Angler fish Giant tube worm Jellyfish (unknown species) -1255 -1689 -2265 The vehicle collects a fifth sample, a fluorescent shrimp, at a depth of -2000 meters, relative to sea level. Select all the samples that were collected closer to the surface than the fluorescent shrimp. ( Hint 2 correct answers) crab angler fish giant tube worm jellyfish
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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