V. For the following data set, complete the table and determine the mean, median, mode and standard deviation, rounded off to two decimal places. Note: Round off the to two decimal places before proceeding to mean (m – x). Write on the last two columns every digit that would appear in your calculator. 2. In a study of the time in minutes it takes an untrained mouse to run a maze, a researcher recorded these data in seconds. C.I f fm cf < (т - х)2 (т - х)2 m 5.6 – 6.2 8 4.9 - 5.5 16 4.2 - 4.8 14 3.5 – 4.1 12 2.8 – 3.4 7 2.1 - 2.7 5
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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