CHAPTER 7: PRESENTATION OF DATA Name: ___________________ Student - - PDF document

CHAPTER 7: PRESENTATION OF DATA Name: ___________________ Student ID: _____________

• 1. Draw a multiple bar chart for the data

Number of student passing certain exam in School A Subjects English Physic Maths Science Male 230 150 156 220 Female 220 140 210 100

• 2. Choose a suitable scale and draw a bar chart to illustrate this information.

“The staffs of a company are employed in either production, sales or administration. There are 180 production staff, 75 sales staff and 45 administrative staff.” 3. ABC company current assets (RM million) 1992 1993 Stock 448 387 Cash 144 174 Other current assets 346 472 Draw a multiplebar chart to illustrate the above data.

• 4. The data below shows the grades obtained by a group of students in a test.

Grade A B C D E Number of students 12 24 8 10 6 Construct a single bar chart to represent the data given.

• 5. Choose a suitable scale and draw a single bar chart to illustrate this information.

ABC company current assets (RM million) Current Assets Year 1992 Stock 428 Cash 364 Other current assets 304

6. 120 people in a county were surveyed about the kind of pets they own. This pie chart shows the data of the survey. Study the pie chart below and answer the following questions. (i) Calculate the angle of the pie chart for each pet. [4 marks] Pets Angle (º) Cat Turtle Fish Hamster Parrot Dog (ii) How many people own parrot as pet? [2 marks] (iii) How many people own fish or hamster as pet? [3 marks]

• 7. Answer this question based on the pie chart below. This survey is based on a group of college students.

(i) Calculate the angle of the pie chart for each activity. [3 marks] Activity Angle (º) Sleep School Job Homework Meals Entertainment (ii) How many hours per day the students spent on “homework”? [2 marks] (iii) How many hours per day the students spent on “job” and “school”? [3 marks] 8. Based on the pie chart above, which car brand is the most popular? Hence, write down the percentage and angle of it. (Approximately) Which is the least popular car brand?