A doctor is interested in seeing the relationship between age and blood sugar level. Age (X) Blood Sugar (Y) 43   99 21 65 25 79 42 75   The following have whole number answers. As such please write only the number and not any decimal. For example write "1" and not "1.0". If any answer is negative, put the negative sign in front of the answer. For example write "-1".   a) What is ΣXY?   =70747           b) What is ΣX?     =131            c) What is ΣY?       =318 d) What is SP? =332.5 e) Find SSx? I got 338.75 but it's wrong. so get me the answer rather than 338.75, please. f) SSy? =611 g) Find Pearson r.  =0.682

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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.