Homework Sourse1 A contingency table a can only be used when there are tw
1 . A contingency table :
a. can only be used when there are two levels of each variable.
b. can be used to study the relationship between ordinal or nominal level variables.
c. can only be used with interval or ratio level variables.
d. is constructed from the quartiles of a data set..
____________ 2. A dot plot shows the range of values along the:
a. vertical axis. b. ( x, y ) diagonal axis.
c. median axis. d. horizontal axis.
____________3 . A scatter diagram is a graphic tool used to portray:
a. the mean of the data values. b. the range of the data values.
c. the midpoint of data values. d. the relationship between variables.
____________4 . In a stem and leaf display:
a. the leaf is the leading digit or digits of the number.
b. the stem is the leading digit or digits of the number.
c. the stem or the leaf can be the leading digit or digits of the number.
d. the stem is the trailing digit.
____________5. A committee of three is chosen from among the five professors – Dr. Smith,
Dr. Andrews, Dr. Joalvz, Dr.Fritz and Dr. Burke. What is the probability that
Dr. Burke is on the committee? Show solution.
A) 1/5 B) 2/5 C) ½ D) 3/5
____________6. A fair coin is tossed three times. What is the probability of obtaining one
Head and two Tails? (A fair coin is one that is not loaded, so there is an equal chance of it landing Heads up or Tails up.) Show solution.
Exercise 2. There are four major fields offered in a College of Business in a University which are Accounting, Finance, Management and Marketing. The following table shows the number of students enrolled in each major. Use these data to answer questions 2.1, 2.2 & 2.3 in the next page:
Major
Number of Students
Accounting
120
Finance
170
Management
280
Marketing
90
TOTAL
Exercise 2. Questions 2.1,2.2 & 2.3
2.1)Develop a relative frequency distribution
2.2)Develop a percentage frequency distribution
2.3)Construct a Line or Bar graph for the number of students enrolled for each major.
A) ¼ B)1/3 D) 4/8 B) 3/8
| Major | Number of Students |
| Accounting | 120 |
| Finance | 170 |
| Management | 280 |
| Marketing | 90 |
| TOTAL |
Solution
1 . A contingency table :
b. can be used to study the relationship between ordinal or nominal level variables.
2. A dot plot shows the range of values along the:
b. ( x, y ) diagonal axis.
3.
3 . A scatter diagram is a graphic tool used to portray:
d. the relationship between variables.
4 . In a stem and leaf display:
b. the stem is the leading digit or digits of the number.
