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PHC 321

Discussion Question 1

Discussion Question

1. Monitoring the Future is a longitudinal study of the behavior and attitudes of U.S. secondary school students. Data from the 2014 survey, assessing the frequency of consuming breakfast as a measure of the healthier lifestyle by student race, are reported. The table has a different format, showing frequencies and percentages in one column.

	Black	White	Hispanic
	f	f	f
	%	%	%
Never	4	14	5
	9.3%	6.4%	7.0%
Seldom	11	22	9
	25.6%	10.1%	12.7%
Sometimes	10	43	21
	23.3%	19.7%	29.6%
Most days	2	25	9
	4.7%	11.5%	12.7%
Nearly every day	7	30	2
	16.3%	13.8%	2.8%
Every day	9	84	25
	20.9%	38.5%	35.2%
Total	43	218	71
	100%	100%	100%

1. Report appropriate measures of central tendency for each racial group along with their dispersion measures.
2. From the presented dataset, discuss how students' breakfast habits differ by race. In your view, which point of central tendency provides a better description of each category?

__________

My answer :

Because "frequency of eating breakfast" is an ordinal variable, we may utilize measures of central tendency such as mode and median.

The Median is the order of the values as well as the value chosen.

Black- sometimes

White- nearly every day

Hispanic-most days

The Mode: This is the most common response.

Black- seldom (F=11)

White- every day (F=84)

Hispanic- every day (F=25)

As previously said, black students have a typical practice of eating breakfast seldom, whereas white students and those of Hispanic descent eat breakfast on a daily basis, and so breakfast differs according to race.

We choose mode because it expresses the most frequent behavior in the center of the group, and the most common practice among black students is that they rarely eat breakfast, whereas whites and Hispanics eat breakfast.