John records the dates of a bunch of nickels. Determine the mean date of the nickels. final answer, rounded to 2 decimal places. hint: find the midpoint of each yearly range Date 1990-1999 1980-1989 1970-1979 1960-1969 Frequency 56 42 21 5
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.
John records the dates of a bunch of nickels. Determine the mean date of the nickels.
final answer, rounded to 2 decimal places.
hint: find the midpoint of each yearly
| Date | 1990-1999 | 1980-1989 | 1970-1979 | 1960-1969 |
| Frequency | 56 | 42 | 21 | 5 |
Step by step
Solved in 2 steps with 2 images
