Effectiveness of a solution
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Which statement best describes the effectiveness of a solution?
2. A payroll program calculates every employee's pay with the wrong tax rate. Which criterion is it failing?
3. Which is a sub-theme of judging effectiveness?
4. A library app lets users search for books but cannot show which books are on loan, which was a listed requirement. What does this show?
5. Which describes fitness for purpose?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1Effectiveness | AHow well a solution does what it was intended to do, giving correct, complete and usable results | |
| 2Accuracy of output | BThe number of features does not show effectiveness. The solution must produce accurate output and meet the stated requirements and purpose. | |
| 3A solution is effective when it meets every functional requirement in the SRS, which can be tested by checking each requirement | CPurpose: Order lunch online. Result: Orders placed and paid correctly | |
| 4Fitness for purpose means the solution suits the job it was built for, such as a canteen app that lets students order and pay | DThis confuses effectiveness with efficiency. Effectiveness is about correct, complete and usable results that meet the purpose, not speed. | |
| 5Effectiveness = how fast the program runs | ETest: Requirement 4 'Calculate total with GST' - PASS | |
| 6Evaluation: The app is effective because it has lots of features | FWhether the results the solution produces are correct, such as a GST total that matches a hand calculation |
C
Definitions
Effectiveness
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
IF actual _ expected THEN
DISPLAY "Output is accurate"
END IF
2.
__ meetsRequirements = TRUE THEN
DISPLAY "Solution is effective"
END IF
3.
IF output <> expected THEN
_______ "Output is inaccurate"
END IF
4.
IF correct = TRUE ___ complete = TRUE THEN
DISPLAY "Fit for purpose"
END IF
5.
passed ← 18
tests ← 20
accuracy ← passed _ tests * 100
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
price ← 100
B
total ← price + 1.1
C
expected ← 110
D
IF total = expected THEN
E
DISPLAY 'Accurate'
F
END IF
Question 2
A
INPUT mark
B
required ← 50
C
IF mark > required THEN
D
DISPLAY 'Pass'
E
END IF
Question 3
A
SET total ← 0
B
FOR i ← 1 TO COUNT(marks) - 1
C
total ← total + marks[i]
D
END FOR
E
DISPLAY total / COUNT(marks)
Question 4
A
INPUT celsius
B
fahr ← celsius * 5 / 9 + 32
C
DISPLAY fahr
Question 5
A
total ← price + qty
B
tax ← total * 0.1
C
DISPLAY total + tax
Answer Key
Effectiveness of a solution
Section A: Quick Questions
Q1
A — How well it does what it was intended to do, with correct, complete and usable results
Q2
A — Effectiveness, because the output is not accurate
Q3
A — Checking the solution against the functional requirements
Q4
B — The solution is incomplete, so it is less effective
Q5
B — The solution suits the task and users it was designed for
Section B: Match the Pairs
Q1
Effectiveness → How well a solution does what it was intended to do, giving correct, complete and usable results
Q2
Accuracy of output → Whether the results the solution produces are correct, such as a GST total that matches a hand calculation
Q3
A solution is effective when it meets every functional requirement in the SRS, which can be tested by checking each requirement → Test: Requirement 4 'Calculate total with GST' - PASS
Q4
Fitness for purpose means the solution suits the job it was built for, such as a canteen app that lets students order and pay → Purpose: Order lunch online. Result: Orders placed and paid correctly
Q5
Effectiveness = how fast the program runs → This confuses effectiveness with efficiency. Effectiveness is about correct, complete and usable results that meet the purpose, not speed.
Q6
Evaluation: The app is effective because it has lots of features → The number of features does not show effectiveness. The solution must produce accurate output and meet the stated requirements and purpose.
Section C: Definitions
Q1
Effectiveness — How well a solution does what it was meant to do, giving correct, complete and usable results that meet the requirements and suit its purpose.Section D: Fill in the Blanks
Q1
IF actual = expected THEN
DISPLAY "Output is accurate"
END IFQ2
IF meetsRequirements = TRUE THEN
DISPLAY "Solution is effective"
END IFQ3
IF output <> expected THEN
DISPLAY "Output is inaccurate"
END IFQ4
IF correct = TRUE AND complete = TRUE THEN
DISPLAY "Fit for purpose"
END IFQ5
passed ← 18
tests ← 20
accuracy ← passed / tests * 100Section E: Spot the Error
Q1
B — Adding 1.1 gives 101.1, not the expected 110, so the output is inaccurate. Adding 10% needs price * 1.1 to give a correct result.
Q2
C — The requirement says a mark equal to the pass mark must pass. Using > wrongly fails a mark of 50, so the solution does not meet the requirement. It should be >=.
Q3
B — The loop skips the last mark, so the total is incomplete and the average is wrong. The loop should run to COUNT(marks) so the output is complete and correct.
Q4
B — The conversion formula is upside down, so the output is inaccurate. Celsius to Fahrenheit is celsius * 9 / 5 + 32.
Q5
A — The total cost is the price multiplied by the quantity. Adding them gives an incorrect result, so the solution is not accurate. It should be price * qty.