In the data set below, what are the lower quartile, the median, and the upper quartile? 20, 22, 25, 25, 35, 43, 45, 55, 55, 57 lower quartile = _____ median = _____ upper quartile = _____

Arrange Data Set: Arrange the data set in ascending order and list it out. The data set is already in ascending order: 20, 22, 25, 25, 35, 43, 45, 55, 55, 57.Find Median: Find the median of the data set. Since there are 10 numbers, the median will be the average of the 5th and 6th numbers. Median = (35 + 43) / 2 = 78 / 2 = 39.Lower Quartile Data: Identify the data set for the lower quartile. For the lower quartile, consider the first half of the data set, excluding the median if it is part of the data. First half is 20, 22, 25, 25, 35.Lower Quartile Value: Find the value of the lower quartile. Since there are 5 numbers in the first half, the lower quartile will be the middle number. Lower quartile = 25.Upper Quartile Data: Identify the data set for the upper quartile. For the upper quartile, consider the second half of the data set, excluding the median if it is part of the data. Second half is 43, 45, 55, 55, 57.Upper Quartile Value: Find the value of the upper quartile. Since there are 5 numbers in the second half, the upper quartile will be the middle number. Upper quartile = 55.

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In the data set below, what are the lower quartile, the median, and the upper quartile? $\newline$ $20, 22, 25, 25, 35, 43, 45, 55, 55, 57$ $\newline$ lower quartile = ___ $\newline$ median = _ $\newline$ upper quartile = ___

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Algebra 1

Calculate quartiles and interquartile range

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Q. In the data set below, what are the lower quartile, the median, and the upper quartile?

\newline

20, 22, 25, 25, 35, 43, 45, 55, 55, 57

\newline

lower quartile = _____

\newline

median = _____

\newline

upper quartile = _____

Arrange Data Set: Arrange the data set in ascending order and list it out. $\newline$ The data set is already in ascending order: $20, 22, 25, 25, 35, 43, 45, 55, 55, 57$ .
Find Median: Find the median of the data set. $\newline$ Since there are $10$ numbers, the median will be the average of the $5$ th and $6$ th numbers. $\newline$ Median = $(35 + 43) / 2 = 78 / 2 = 39$ .
Lower Quartile Data: Identify the data set for the lower quartile. $\newline$ For the lower quartile, consider the first half of the data set, excluding the median if it is part of the data. $\newline$ First half is $20$ , $22$ , $25$ , $25$ , $35$ .
Lower Quartile Value: Find the value of the lower quartile. $\newline$ Since there are $5$ numbers in the first half, the lower quartile will be the middle number. $\newline$ Lower quartile $= 25$ .
Upper Quartile Data: Identify the data set for the upper quartile. $\newline$ For the upper quartile, consider the second half of the data set, excluding the median if it is part of the data. $\newline$ Second half is $43$ , $45$ , $55$ , $55$ , $57$ .
Upper Quartile Value: Find the value of the upper quartile. $\newline$ Since there are $5$ numbers in the second half, the upper quartile will be the middle number. $\newline$ Upper quartile $= 55$ .