Fundamentals of Descriptive Statistics by Holcomb Zealure C

Author:Holcomb, Zealure C [Holcomb, Zealure C]
Language: eng
Format: azw3
ISBN: 9781138287327
Publisher: Taylor and Francis
Published: 2016-09-14T16:00:00+00:00

The third quartile is halfway between 50 and 128, which is 89 (that is, 50 + 128 = 178/2 = 89).

With these calculations, we can now describe the distribution as follows:

The median is 22, Q1 = 3.5, and Q3 = 89.

From this, readers of a report on these data would know that the average number of days is 22. Because the average is the median, they would know that half the cases were above 22 and half were below 22. They would get a good picture of the variability of the distribution from the quartiles, which indicate that 25% of the women waited less than 3.5 days and 25% of the women waited more than 89 days.

We can provide a more complete picture by including the highest and lowest value. This gives us a five-point description of the distribution, in which 3.5 has been rounded to a whole number (4) for the sake of consistency with the other values, which are whole numbers:

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