School administrators collect data on students attending the school. Which of the following variables is quantitative?
A) whether the student is in AP classes
B) whether the student has taken the SAT
C) class (freshman, soph., junior, senior)
D) grade point average
E) none of these
Question 2
Students taking an intro stats class reported the number of credit hours that they were taking that quarter. Summary statistics are shown in the table.
16.65
s 2.96
min 5
Q1 15
median 16
Q3 19
max 28
a. Suppose that the college charges 73 per credit hour plus a flat student fee of 35 per quarter. For example, a student taking 12 credit hours would pay 35 + 73(12 ) = 911 for that quarter.
i. What is the mean fee paid?
ii. What is the standard deviation for the fees paid?
iii. What is the median fee paid?
iv. What is the IQR for the fees paid?
b. Twenty-eight credit hours seems like a lot. Would you consider 28 credit hours to be unusually high? Explain.
Students and Money
Doty's data show a very rapid drop in late adulthood in the ability to identify smells
data
data
Survivorship curves. Blue lines are theoretical curves. Red dots are data from field studies.
Ribosome structure and tRNA-binding sites interpreted from cryo-EM–generated data