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

Indicates: a) class width b) number (amount) of sample data c) number of classes

3. Make 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 limits and frequency In the table.

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

Borders Boundaries Class Absolute Cumulative Relative Relative

mark frequency frequency absolute frequency Cumulative Frequency

98 - 104 12 105-111 13 112-118 24 119-125 11 126-132 5 133-139 2

Instructions: a) Complete the frequency distribution table in all its parts.

b) Indicate: 1st class mark of the third class 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) Make a short paragraph describing the weight distribution of the young people in this exercise.