A. What type of data is this (Categorical or Numerical)? B. What would be an appropriate type of graph for this data? C. Which of the following graphs are correct for this data?
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.
1.
A random sample of 24 individuals who has completed the syllabus survey at the beginning of the semester is taken. Whether the person has attempted the class before or not is recorded.
A.
Categorical data:
The data that consists of the attributes having different categories, manes or labels is termed as categorical data.
The data is recorded as 'Yes, No' to known whether the person has attempted the class before or not. It has consists of attributes with categories 'Yes, No'. This shows that the data is categorical.
Thus, the type of data is categorical.
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