Name:
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Performance Task 4: Application of Statistics in Research
Quarter 4
Task: Solve for the following items. Write your complete and neat solutions.
1. The following were the responses to the question “Which dish is your favorite in this
restaurant?”
Favorite Dish
Number of Customers
Pork Adobo
9
Pansit
8
Porkchop Steak
5
Grilled Liempo
7
Sinigang na Bangus
4
Fresh Lumpia
6
Bulalo
5
Fried Chicken
6
a. What measure of central tendency can best be used to know the customers’
favorite dish?
b. The restaurant has difficulty preparing the fresh lumpia. Should they phase it
out?
2. The employees are grouped according to their length of service in the company. Use
the frequency table to answer the following:
Number of Years of Service
0–3
4–7
8 – 11
12 – 15
16 – 19
20 – 23
24 – 27
Number of Employees
8
9
12
15
14
5
2
a. On the average, how many years of service has an employee rendered to the
company?
b. Mr. Gomez has stayed in the company for 21 years. What percent of the employees
has stayed in the company as long as or longer than him?
3. A company makes a survey of their employees’ satisfaction level. The number of
employees who answered the survey are grouped according to their salary brackets.
Use the frequency table to answer the following:
Monthly Salary
(in thousands of pesos)
16 – 30
31 – 45
46 – 60
61 – 75
76 – 90
91 – 105
106 – 120
Number of Employees
27
15
10
6
4
2
1
a. How many employees answered the survey questionnaire?
b. What is the average monthly salary of the employees in the company?
c. If Nina’s monthly salary is Php 80, 000, what is her percentile rank?
Rubric (Product/Performance Task)
Criteria
Accuracy of the
Computations
4
Excellent
Computations are
accurate and
supported with
correct and
detailed
illustrations and
interpretations
3
Proficient
Computations
are accurate and
supported with
correct
illustrations.
2
Progressing
Computations
are correct but
illustrations and
interpretations
are incorrect.
1
Beginning
Most of the
computations,
illustrations and
interpretations
are erroneous.