A meteorologist recorded the rainfall amounts, in inches, for eight days: 1.2, 0.8, 2.1, 1.5, 0.9, 3.0, 1.4, 1.1 What is the median rainfall amount?, 1.2 inches, 1.3 inches, 1.4 inches, 1.5 inches, A student measured the resting heart rates of nine volunteers: 72, 68, 81, 75, 90, 70, 66, 77, 74 Which statement best describes the median heart rate?, It is 74 because that value appears in the middle of the original list., It is 75 because half of the ordered data falls above it and half falls below it., It is 72 because that number is closest to the average heart rate., It is 77 because it is the middle of the highest values., Scientists recorded the amount of ozone particles in the air on seven different days: 44, 51, 49, 47, 90, 46, 48 Why might the median be more useful than the mean for describing this data?, The median always gives the highest value in a set., The median is easier to calculate when numbers are large., The median is less affected by an unusually high value., The median includes all data values equally., The reaction times, in milliseconds, for five students were: 210, 180, 205, 190, 400 What is the median reaction time?, 205 milliseconds, 210 milliseconds, 197 milliseconds, 190 milliseconds, A student says, “To find the median, you just divide all the numbers by how many numbers there are.” Which response best evaluates the student’s statement?, The student is correct because the median and mean are found the same way., The student is incorrect because that process finds the range., The student is incorrect because that process describes how to find the mean, not the median., The student is correct only when the data set has an odd number of values.

Median practice

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