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Topic: sample MC questions
Replies: 0

 Josh Tabor Posts: 34 Registered: 12/6/04
sample MC questions
Posted: Nov 14, 1996 12:29 AM

Since we are all in the same boat (no sample AP tests) it would be a
great idea if each AP Stats teacher would contribute a couple sample
multiple choice questions for everyone to share. If we all do this, we
could develop quite a nice test bank. To set a good example, here are
four that I created/modified. Please let me know if you think they are
too easy or have any other problems. I hope this will encourage other
teachers to contribute. It would sure help me out quite a bit.

On a side note, I recently assigned a bivariate data project to my kids
and had to veto almost half of their initial topics. It is really
important to discuss their topics with them ahead of time so they do
not analyze categorical data or waste time collecting other useless
data.

Josh Tabor
Wilson HS
Hacienda Heights, CA

1. The population of a bacteria colony is determined to grow
exponentially. An alert statistician transforms the data by taking the
log (base 10) of the population. The least squares regression line is
y = 0.25 + .5x for the transformed data (x = time in hours). What
would the population be after 4 hours (to 2 decimal places)?

a. 2.25 b. 5.06 c. 177.83 d. 0.35 e. none of these

2. Which of the following should be considered outliers?
I. a point with a z-score of 3.9
II. a point that is 1 IQR above Q3
III. a value of 17 from N(5,3)

a. I b. II c. III d. I and III e. II and III

3. Which of the following measures is resistant?

a. mean b. Q1 c. variance d. minimum e. standard deviation

[pictured here should be two identical bell shaped histograms. #1 has
a range of 1-10 and #2 has a range of 11-20]

4. According to the histograms above, ,which of the following is true?
a. mean1 = mean2, var1 = var2
b. mean1 > mean2, var1 = var2
c. mean1 < mean2, var1 = var2
d. mean1 < mean2, var1 < var2
e. mean1 < mean2, var1 > var2