The marks achieved by Aicheiah in Mathematics, Science, and English, together with the mean and the standard deviation for each subject, are given in the following table: Subject Mark Mean Standard deviation Mathematics 60 52 10 Science 70 70 5 English 65 60 3 Which of the following statements is correct? Select one: Aicheiah’s best subject was Math, followed by Science and then English. Aicheiah’s best subject was Science, followed by Math and then English.
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.
The marks achieved by Aicheiah in Mathematics, Science, and English, together with the
|
Subject |
Mark |
Mean |
Standard deviation |
|
Mathematics |
60 |
52 |
10 |
|
Science |
70 |
70 |
5 |
|
English |
65 |
60 |
3 |
Which of the following statements is correct?
Select one:
Aicheiah’s best subject was Math, followed by Science and then English.
Aicheiah’s best subject was Science, followed by Math and then English.
Aicheiah’s best subject was Math, followed by English and then Science.
Aicheiah’s best subject was English, followed by Math and then Science.
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