Use the sample data below to answer the following questions. Round decimal to two places. Verbal IQ Score of People Exposed to Lead 50-59 60-69 70-79 80-89 90-99 100-109 110-119 120-129 Frequency Relative Frequency 10 25 43 26 8 3 2 (a) Compute the relative frequency for the given distribution in the table above. Type your answer in order by class, separating the relative frequency for each class with a comma. Round decimal to two places. (b) Does the distribution of verbal IQ scores of people exposed to lead appear to have a normal distribution? Explain. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).
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 2 steps with 1 images
