Question: The scores of 20 students in a math test were: 85, 90, 78, 88, 92, 89, 85, 86, 91, 89, 85, 88, 83, 90, 92, 88, 85, 90, 89, 87. What is the mean, mode, median, range, and average of the scores?
+
What is the basis of vectors in a 3D space formed by the vectors (2, 1, 4) and (-1, 3, 2)?
+
What is the range of values for the sinusoid y = 2sin(x/3) + 1, where x is in the interval [-π, π]?