The test scores of 9 students are: 85, 90, 75, 88, 90, 62, 54, 80, and 78.
Find the mean, median (Q₂), range, lower quartile (Q), upper quartile (Q), and interquartile range (IQR) for these students' test scores
(Round your answers to nearest tenths place.)
Interquartile Range=_______
Fill in the blanks based on the measures of center you calculated above.
25% of the students had scores higher than_______ points.