CSC Data Interpretation and Analysis Reviewer

CSC Data Interpretation and Analysis Reviewer
  • CSC Data Interpretation and Analysis Reviewer

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DATA INTERPRETATION AND ANALYSIS 1.

ANALYZING AND COMPUTING VALUES IN CHARTS AND FIGURES TIP:

UNDERSTAND AND INTERPRET DATA VALUES COMPARE USING SIMILAR UNITS

Note: Total Percentage = 100% Percentage formula = portion/total x 100 Percentage increase/decrease = (Current data – Initial Data)/Initial Data Average formula = summation of data points/total no. of data points Pie Graph: Personal Income (2004) PhP 1,249.9 billion

Unde r 25 ye a rs old, 11%

35-44 ye a rs

ove r 44 ye a rs

old, 20%

old, 45%

25-34 ye a rs old, 24%

In 2004, what was the approximate personal income, in billions of pesos, of the age group from 35-44 years: a. d. Answer:

180 280

b. e.

220 310

c.

250

1,249.9 x 0.20 = 249.98

What is the ratio of the personal income of the group over 44 years of age to that of the age group from 35-44 years? a. d. Answer:

2:1 9:4

b. e.

3:2 4:9

45 : 20

45/5 = 9;

c.

5:2

20/5 = 4

If the total personal income in 2004 was 20% greater than it was in 2003, what was the approximate income in 2003, in billions of pesos? a. d. Answer:

920 1040

b. e.

960 1100

c.

1000

1,249.9 / 1.20 = 1041.58 [Percent increase = (current – past)/past x 100]

2.

DATA LIST:

The list below shows the price of oranges at five different stores. Which stores offers the lowest price per oranges? Store A Store B Store C Store D Store E Answer:

3.

: : : : :

99/5 = 25 per piece 100/3 = 200/12 = 40/2 =

5 pieces for P99 25 per piece 3 pieces for P100 P200 a dozen 2 pieces for 40 19.8 per piece 33.33 per piece 16.67 per piece 20 per piece

TABLE: Characteristics of University Students 1988 1992 1996

Gender: Male Female Courses: Tutorial Programs Entrance Tests Review Professional Advancement

2000

2004

550 450

686 714

720 780

920 1080

1150 1350

350 490 160

280 882 238

330 900 270

460 1160 380

575 1425 500

In what year did the female enrollees start to become more than half of the total enrollees? Answer:

female/total enrollees = 714/1400 = 0.51 (more than 51 percent)

In 1992, what fraction of the students are enrolled in tutorial programs? Answer:

tutorial/total enrollees = 280/1400 = 1/5

In 1988, what was the ratio of students enrolled in tutorial programs to those who enrolled in entrance tests review? Answer:

tutorial programs/entrance test review = 350/490 = 5/7

4.

GRAPH: 150

100

50

A B C 2003

A BC 2004

A BC 2005

In 2004, the number of students of Branch C was approximately how many times of Branch A? Answer:

Twice

For the period shown on the graph, which of the following is true? a. b. c. d. e.

Only Branch B showed a steady rise in number of students. Branch A consistently had the lowest number of students. Only Branch A showed a steady rise in number of students Branch C consistently had the lowest number of students. Branch A and C had nearly the same number of students.