Chapter 7 Summary and Review 629- GRADES Jose worked hard this semester, earning
grades of 87, 92, 97, 100, 100, 98, 90, and 98. If he
needs a 95 average to earn an A in the class, did he
make it? - GRADE SUMMARIES The students in a
mathematics class had final averages of 43, 83, 40,
100, 40, 36, 75, 39, and 100. When asked how well
her students did, their teacher answered, “43 was
typical.” What measure was the teacher using:
mean, median, or mode? - PRETZEL PACKAGING
Samples of SnacPak pretzels
were weighed to find out
whether the package claim
“Net weight 1.2 ounces” was
accurate. The tally appears in
the table. Find the mode of
the weights. - Find the mean weight of the samples in
Exercise 33. - BLOOD SAMPLES A medical laboratory technician
examined a blood sample under a microscope and
measured the sizes (in microns) of the white blood
cells. The data are listed below. Find the mean,
median, and mode.
7.8 6.9 7.9 6.7 6.8 8.0 7.2 6.9 7.5
Weights of
SnacPak Pretzels
Ounces Number
0.9
1.0
1.1
1.2
1.3
1.41
6
18
23
2
0- SUMMER READING A paperback version of the
classic Gone With the Windis 960 pages long. If a
student wants to read the entire book during the
month of June, how many pages must she average
per day? - WALK-A-THONS Use the data in the table
to find the mean (average) donation to a charity
walk-a-thon. - GPAs Find the semester grade point average for a
student that received the grades shown below.
Round to the nearest hundredth. (Assume the
following standard point values for the letter grades:
A = 4, B = 3, C = 2, D = 1, and F = 0.)
REVIEW EXERCISES
Donation amount $5 $10 $20 $50 $100
Number received 20 65 25 5 10Course Grade Credits
Chemistry A 5
Sociology C 3
Economics D 4
Archery A 1When a collection of values has two modes, it is
called bimodal.
The collection of values
1233456678
has two modes: 3 and 6.