Frequency distribution tables

1. What is the use that we can give to a frequency distribution table?

2. Below is the age distribution of a sample of people who regularly use the new communication platforms Zoom and Teams to hold virtual work meetings or to communicate with family and friends. Ages Number of people 28-31 211 32-35 180 36-39 502 40-43 499 44-47 201 a) class width b) number (amount) of sample data c) number of classes

3. A frequency distribution table to present the blood pressure of 32 patients who visited El Buen Samaritano Hospital this morning: 58, 77, 36, 55, 63, 68, 33, 41, 78, 26, 69, 53, 39, 80, 53, 15, 47, 33, 81, 54, 70, 33, 29, 74, 71, 66, 63, 70, 22, 45, 76, 90. Just set the limits and frequency in the board.

4. Below is the distribution of weights (expressed in pounds) of a group of young people:

Boundaries	Limits	Class mark	Absolute frequency	Cumulative frequency	Absolute relative frequency	Cumulative relative frequency
	98-104		12
	105-111		13
	112-118		24
	119-125		11
	126-132		5
	133-139		2

a) Complete the frequency distribution table in all its parts. b) Indicate: 1. third class class mark 2. cumulative frequency of the fifth class 3. upper border of the second class 4. class width 5. number of classes 6. How many youth weigh up to 132 pounds? 7. What percentage of youth weigh between 119 and 125 pounds? c) Construct a histogram to present the exercise data (weight of the youth). d) A short paragraph describing the weight distribution of the young people.