WorksheetsProb & Stats Semester 1 Review ch 1-6
Total questions: 70
Worksheet time: 3hrs 49mins
Identify whether the statement describes inferential or descriptive statistics:
There is a relationship between a person's height and weight
inferential
descriptive
Identify whether the statement describes inferential or descriptive statistics:
The results for the homecoming survey
inferential
descriptive
Determine whether the data are qualitative and quantitative:
the number of wins for the volleyball team
qualitative
quantitative
Determine whether the data are qualitative and quantitative:
the favorite food of the senior class
qualitative
quantitative
Identify the data set’s level of measurement:
the temperature of Igloo ice cream
nominal
ordinal
interval
ratio
Identify the data set’s level of measurement:
the number of tackles Wade gets during the football season
nominal
ordinal
interval
ratio
Identify the data set’s level of measurement:
a player's position for their team
nominal
ordinal
interval
ratio
Identify the sampling technique used:
You survey a few students from each grade level
stratified
random
cluster
convenience
systematic
Identify the sampling technique used:
You email a survey to the entire student body and hope some of them actually take it
stratified
random
cluster
convenience
systematic
Identify the population:
When 200 students from TVHS were surveyed, it was found that 84% of them have Internet access at home.
200 students
TVHS students
84%
168 students
Identify the sample:
When 200 students from TVHS were surveyed, it was found that 84% of them have Internet access at home.
200 students
TVHS students
84%
168 students
Identify the sampling technique used:
You survey all students from one grade level
stratified
random
cluster
convenience
systematic
Observe the frequency distribution:
What is the class width?
11
10
25
19.5
Observe the frequency distribution:
Calculate the midpoint of the seventh class.
86
91
96
96.5
85.5
Observe the frequency distribution:
List the class boundaries.
20, 31, 42, 53, 64, 75, 86, 96
20, 31, 42, 53, 64, 75, 86
19.5, 30.5, 41.5, 52.5, 63.5, 74.5, 85.5, 96.5
30, 41, 52, 63, 74, 85, 96
Observe the histogram and choose the frequency distribution that corresponds to it.
The following data set shows the minutes spent on internet by 50 internet users. Use seven classes to construct a frequency distribution. What's the class width?
11
12
7
86
Which pie chart represents the same data as the table?
What is the missing number in the cumulative frequency column?
19
9
15
22
Dennis kept track of the high temperature for 2 weeks in October. Here are the temperatures he recorded:
82, 81, 81, 86, 77, 82, 86, 82, 75, 73, 73, 64, 59, 55
Which stem and leaf plot correctly shows this data?
36, 42, 28, 52, 48, 36, 31
What is the median number of miles Jenna cycled?
Given the data: 136, 150, 119, 150, 125, 140.
Find Q3
125
150
139.5
143
Find Q1 of the following set of scores 6, 7, 8, 9, 11, 13, 15
13
7
9
6
Find the IQR of the data
20, 22, 25, 29, 31
30
21
25
9
4,5,5,2,3,3,2,8
12,10,10,10,13,12,11,13,10
Find the midrange.
2, 5, 8, 3, 13, 5
11
13
5
7.5
What is the standard deviation for the SAMPLE data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2
6.89
10.1
7.26
9
What does the symbol σ represent?
Standard Deviation of a population
Variance of a population
Standard Deviation of a sample
Sigma
What is the variance for the SAMPLE data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2
47.47
102.01
52.77
81
Find the mean.
10
20
30
40
Find the variance.
30
6.08
36.92
1440
"The student body of 165 students wants to elect three representatives". Is this a permutation, combination, or neither?
Combination
Fundamental Counting Principle
Permutation
How many 4-digit pin numbers can be created if the first digit cannot be zero.
9000
40
39
90
In how many different ways can a committee of three people be selected from a total of eight?
56
336
24
512
What is the probability of choosing a 4 or 5 from a deck of cards?
1/13
2/13
8/13
2/52
What is the probability of choosing a spade from a deck of cards?
1/13
1/4
4/52
13/26
What is the probability of choosing a heart, replacing it, then choosing a heart again?
1/4
1/16
1/169
4/169
What is the probability of choosing an Ace, replacing it, then choosing a diamond?
1/13
1/52
13/52
1/169
When rolling a single die, the events of rolling an odd number and rolling a prime are ...
Mutually Exclusive
Not Mutually Exclusive
If you are picking a card randomly from a deck of cards, the events of picking an ace and picking a ‘3’ are ...
Mutually Exclusive
Not Mutually Exclusive
What is the sample space?
6 bears
orange, green, red, white, yellow
unlikely
2 red bears
heads
tails
heads and tails
penny, dime, nickel, quarter
X 50 20 5
P(X) 0.1 0.3 0.6
A
B
C
D
An algebra 2 test has 6 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 6 questions, what is the probability that you get exactly 3 questions correct?
0.962
0.132
0.831
0.250
X is the number of heads when a fair coin is flipped 12 times
Find P(X ≥ 8)
0.93
0.12
0.81
0.19
Suppose you buy a ticket for $6 out of a lottery of 1000 tickets where the prize for the one winning is to be $800. Find the expected value of the game
$800
-$6.50
-$6
-$5.20
About what percent of the products last between 12 and 15 days?
The actual weight of bags of mixed vegetables is normally distributed with a mean weight of 16.0 oz and a standard deviation of 0.1 oz. Find the number of bags of mixed vegetables in a shipment of 700 bags that weigh more than 16.1 oz.
18
95
238
111
Find the value of x.
Z-score = -2.2
mean = 25
Standard Deviation: 7
9.6
-36
5.2
23.46
About what percent of the products last 6 days or less?
68%
97.7%
16%
2.3%
2.28%
.15%
2.35%
2.25%
The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days. About what percent of the products last 10 days or more?
25.14%
97.67%
56.67%
74.86%
