A set of eight systolic blood pressures is given. 1 2 3 4 5 6 7 8 Pressure 113 121 131 154 128 116 103 120 (a) Find values of the mean and standard deviation for these data. (Round your answers to three decimal places.) 1.(the mean) 2.(standard deviation) (b) What is the
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.
A set of eight systolic blood pressures is given.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
| Pressure | 113 | 121 | 131 | 154 | 128 | 116 | 103 | 120 |
1.(the mean)
2.(standard deviation)
(b) What is the value of the variance for these data?
s2 =
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