Math  /  Data & Statistics

QuestionThe given data represents the results of a study on infant mortality rates (number of infant deaths per 1000 live births) by country.
Use the data table to answer the following questions. a. Find the first quartile (Q1) and the third quartile (Q3). b. Find the interquartile range (IQR). Interpret it. Full data set \begin{tabular}{cc} 60 & 59 \\ 89 & 141 \\ 143 & 54 \\ 107 & 118 \\ -51 & 64 \\ 145 & 65 \\ 121 & 77 \end{tabular} a. The first quartile, Q1, is \square (Type an integer or decimal rounded to one decimal place as needed.)

Studdy Solution
Calculate the interquartile range (IQR):
IQR=Q3Q1=12160=61 IQR = Q3 - Q1 = 121 - 60 = 61
Interpretation: The interquartile range (IQR) of 61 indicates the range within which the middle 50% of the data lies.
The first quartile, Q1Q1, is:
60 \boxed{60}

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