Task 1: Referring on the given data below, compare the examination results in Science subject of the two groups of grade 9 students in Camanggaan National High School by computing their means, modes, ranges, MAD, Variance, standard deviations (treating the data as sample), skeweness and kurtosis. Section A Section B 23 43 2 23 16 12 27 16 21 32 19 36 10 38 8 25 13 22 25 32 28 15 32 17 26 28 23 21 23 22 40 28 24
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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- Referring on the given data below, compare the examination results in Science subject of the two groups of grade 9 students in Camanggaan National High School by computing their means,
(Table at the pic)
- Which between the 2 groups performed better? Justify your answer.
- Which between the 2 groups is more consistent? Justify your answer.
- What types of distribution are the two groups of examinees in terms of skewness?
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