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identify the class width, class midpoints, and class
Chapter 2, Problem 5BSC(choose chapter or problem)
In Exercises 5–10, identify the class width, class midpoints, and class boundaries for the given frequency distribution. The frequency distributions are based on real data from Appendix B.
Questions & Answers
QUESTION:
In Exercises 5–10, identify the class width, class midpoints, and class boundaries for the given frequency distribution. The frequency distributions are based on real data from Appendix B.
ANSWER:
Solution 5BSC
We know that, the numbers used to separate the classes in a frequency distribution known as class boundaries so that the continuity in the classes without the gaps created by class limits. The value in the middle of the class known as Class midpoint and is computed by summing the lower and upper class limits and dividing the result by 2. The difference between two consecutive upper class limits in a frequency distribution known as the class width.
For first class, the midpoint of that class is and the class width of that class is.
Similarly, for other classes calculated and given in the following table:
|
Age (years) of Best actress when Oscar was won |
Frequency |
Lower Class Limits |
Upper Class Limi1ts |
Class Boundaries |
Class Mid Points |
Class Width |
|
Lower |
Upper |
||||||
20-29 |