Bivariate table – (two-variable table) also known as a contingency table. Use the table below to answer the probability questions below the table. Gender/Class Math 102 Math 105 Statistics Math 90 Total Male (M) 20 20 0 40 80 Female (F) 10 20 40 25 95 Total 30 40 40 65 175 Using the table in section 1.2 on Gender and Class in the textbook, what is the probability of selecting a male or a student in Math 105. Give your answer as a fraction.
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.
Bivariate table – (two-variable table) also known as a
Use the table below to answer the probability questions below the table.
|
Gender/Class |
Math 102 |
Math 105 |
Statistics |
Math 90 |
Total |
|
Male (M) |
20 |
20 |
0 |
40 |
80 |
|
Female (F) |
10 |
20 |
40 |
25 |
95 |
|
Total |
30 |
40 |
40 |
65 |
175 |
Using the table in section 1.2 on Gender and Class in the textbook, what is the probability of selecting a male or a student in Math 105. Give your answer as a fraction.
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