The total points scored by a basketball team for each game during its last season have been summarized in the table below.
Score Frequency
41-60 3
61-80 8
81-100 12
101-120 7
a. Explain why you cannot use the information in the table to construct a stem-and-leaf display for the data.
b. Construct a histogram for the scores.
Q. 2The data show the total number of medals (gold, silver, and bronze) won by each country winning at least one gold medal in the Winter Olympics.
1 2 3 3 4 9 9 11 11
11 14 14 19 22 23 24 25 29
a. Complete the class frequency table for the data.
Total Medals Frequency
1-5
6-10
11-15
16-20
21-25
26-30
b. Using the classes from the frequency table, construct a histogram for the data.
Q. 3Which of the following is not typically an element of inferential statistical problems?
A) census B) sample
C) measure of reliability D) variable of interest
Q. 4A study in the state of Georgia was conducted to determine the percentage of all community college students who have taken at least one online class.
1500 community college students were contacted and asked if they had taken at least one online class during their time at their community college. These responses were then used to estimate the percentage of all community college students who have taken at least one online class. Identify the population of interest in this study.
A) the 1500 community college students contacted
B) the number of online classes a student has taken
C) the response (Yes/No) to the question, Have you taken at least one online class?
D) all community college students in the state of Georgia
Q. 5As part of an economics class project, students were asked to randomly select 500 New Your Stock Exchange (NYSE) stocks from the Wall Street Journal.
As part of the project, students were asked to summarize the current prices (also referred to as the closing price of the stock for a particular trading date) of the collected stocks using graphical and numerical techniques. Identify the variable of interest for this study.
A) a single stock traded on the NYSE
B) the entire set of stocks that are traded on the NYSE
C) the current price (or closing price) of a NYSE stock
D) the 500 NYSE stocks that current prices were collected from
Q. 6The table shows the number of each type of car sold in June.
Car Number
compact 7,204
sedan 9,089
small SUV 20,418
large SUV 13,691
minivan 15,837
truck 15,350
Total 81,589
a. Construct a relative frequency table for the car sales.
b. Construct a Pareto diagram for the car sales using the class percentages as the heights of the bars.
Q. 7What characteristic of a Pareto diagram distinguishes it from other bar graphs?
What will be an ideal response?
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