ften, frequency distributions are reported using unequal class widths because the frequencies of some groups would otherwise be small or very rge. Consider the following data, which represent the daytime household temperature the thermostat is set to when someone is home for a andom sample of 741 households. Determine the class midpoint, if necessary, for each class and approximate the mean and standard deviation emperature. E Click the icon to view the frequency distribution for the daytime household temperature. Frequency distribution Temperature (°F) Frequency 61-64 35 65–67 62 68–69 191 70 191 71–72 123 73–76 87 77-80 52
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.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images
