An experimenter conducted a study of the relation of size in a particular species of bird to behavioral displays of dominance. The results for four individuals studied are as follows: Bird Size Bird Behavior 4. 4 7 10 8. a). Make a scatter diagram of the raw scores and describe in words the general pattern of association. b). Figure the correlation coefficient. c). Figure whether the correlation coefficient is statistically significant (use the .05 significance level, two-tailed) and report the correlation in APA format (the statistical sentence). d). List the three possible directions of causality.
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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