Name: ___________________________________________ Date: _______________________________ Period: ____
CHS Statistics
Sections 1-4 Review
Section 1:
1) Define parameter, and give an example of a parameter.
2) Define statistic, and give an example of a statistic.
3) How are a parameter and a statistic similar? How are they different?
4 – 10: Classify the data as categorical or quantitative.
4) The number of people in the Nutcracker
5) The student ID numbers of everyone in this class
6) The heights of the Penguins players
7) The total family income for each household in Zelienople
8) The ISBN number of the books at Barnes & Noble
9) The number of gift cards that Student Council purchased for families in need
10) All of the courses on your schedule
11 – 14: Classify the data set by its level of measurement.
11) The lengths of newborn babies at UPMC Magee Women’s Hospital
12) ESPN’s current College Football Playoff Rankings
13) A list of the temperatures in Orlando, FL for the past month
14) A list of the names on our class roster
15 – 18: Decide whether the following are discrete or continuous random variables.
15) X represents the number of performers in the Nutcracker.
16) X represents the cups of cheese that Ms. Halliday needs to put into her Reuben dip.
17) X represents the number of sales at Nordstrom last month.
18) X represents the hours Ms. Halliday spent doing math problems for fun on the weekend.
19 – 22: Decide which method of data collection you would use to gather data for each study.
19) Ms. Halliday’s students’ approval rating of her homework policy
20) A study to see if taking a blood pressure medication will reduce acne
21) A study of student engagement during Ms. Halliday’s Statistics labs
22) A study of the effects of alcohol consumption on pregnancy
23 – 26: Identify the sampling technique used in each collection. Explain your reasoning.
23) Registered voters in Cranberry Twp. were ordered alphabetically and numbered. Every 40th person was selected
from a random starting point on that list.
24) Registered voters in Cranberry Twp. were ordered alphabetically and numbered. A random number generator was
used to generate a sample of 150 people.
25) Registered voters in Cranberry Twp. are separated by their neighborhood of residence, and 8 people from each
neighborhood are randomly selected.
26) Five residential neighborhoods are randomly selected, and then every registered voter in that neighborhood is
selected.
Section 2:
27) Create a stemplot of the following GPAs of a sample of students at Florida State University. Then create a boxplot.
Determine if there are any outliers.
4.00 4.00 3.90 3.81 3.78 4.00 3.99 3.98 3.92 3.91 3.68 1.00
28) The following data represent the weights of a sample of adult females at a Weight Watchers meeting. Fill in the
chart below using 6 classes. Then calculate the mean, median, mode, range, and standard deviation.
115
185
179
163
265
182
156
192
165
201
Classes
210
165
225
188
206
Tallies
288
175
281
198
174
Freq
Midpoint
301
150
136
235
144
275
147
152
245
132
Relative Freq.
Cumul. Freq
199
153
151
253
101
29) Ms. Halliday wants to generalize about student achievement in public school districts in Western PA. Describe a
sampling method that will give her data that will be representative of her population of interest and will be
unbiased.
30) Your 4th quarter grade is weighted. All of your tests, quizzes, labs, and projects will be weighted as 80% of your 4th
quarter grade. Your final exam will be weighted as 20% of your 4th quarter grade. What is your 4th quarter grade if
you earn an average of 92% on all of your tests, quizzes, labs, and projects, and you earn a 76% on your final exam.
Section 3:
31) A random sample of working adults found that 42% drive an SUV to work, 48% drive a black vehicle to work, and
32% drive a black SUV. What is the probability that a person drives an SUV OR a black vehicle?
32) You select two cards from a standard deck. Find the probability of…
a. selecting a king, not replacing the card, and then selecting a jack.
b. selecting a Jack, replacing the card, then selecting a heart.
33) Decide whether the following are independent or dependent events:
a. Studying 1 hour a night for two weeks for your midterm exam; getting an A on the midterm exam
b. Eating an entire half gallon of ice cream each night for a week; your pants feel snug
34) Ms. Halliday has four people in her immediate family. How many ways can they be arranged at the dinner table on
Christmas Eve?
35) From Ms. Halliday’s immediate family of four, how many ways can they pair up for a game?
Section 4:
36) Below is a probability distribution representing the number of pizzas ordered for a school dance.
x
20
21
22
23
24
25
26
P(x)
0.052
0.154
0.232
0.24
0.174
0.105
0.043
a. Find the mean and standard deviation.
b. Find the probability the Student Council will have to order 26 pizzas.
c. Find the probability the Student Council will have to order 22 pizzas.
d. Find the probability the Student Council will have to order no more than 23 pizzas.
e. Find the probability the Student Council will have to order more than 25 pizzas.
f.
Find the probability the Student Council will have to order 23 pizzas or less.