Four students (A-D) each did an analysis in which exactly 10.00 mL o exactly 0.1 M sodium hydroxide is titrated with exactly 0.1M hydrochloric acid. Each student did 5 replicate titrations. Calculate th range, mean, standard deviation, and coefficient of variation of each student's data. A В D 10.08 9.88 10.19 10.04 10.11 10.14 9.79 9.98 10.09 10.02 9.69 10.02 10.10 9.80 10.05 9.97 10.12 10.21 9.78 10.04 Precise Imprecise Imprecise Precise Inaccurate Accurate Inaccurate Accurate Range Mean SD CV
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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