1. Unit 16 Data Presentation Pie Charts

2. Here is table of time spent by a student on homework one evening Represent the data with a pie chart SubjectMathsEnglishPhysicsArtFrenchHistory Time (mins) 5020302030 SubjectTime Fraction of total time Angle Maths50 English20 Physics30 Art20 French30 History30 TOTAL180

3. Here is a table of time spent by a student on homework one evening SubjectMathsEnglishPhysicsArtFrenchHistory Time (mins) 5020302030 Angle100 ◦ 40 ◦ 60 ◦ 40 ◦ 60 ◦ Maths English Physics Art French History

4. Unit 16 Data Presentation Line Graphs

5. Samuel recorded the temperature in his greenhouse at 6am each day for a week. His records are shown on this line graph. a)What was the temperature on Wednesday? b)What was the lowest temperature recorded? c)What was the highest temperature recorded? 25 o c 19 o c 30 o c

6. Unit 16 Data Presentation Histograms

7. A group of students measured the reaction times of 50 other students. The times are given below correct to the nearest hundredth of a second. Collect data into groups, using a tally chart. 0.440.320.310.470.270.310.400.280.160.26 0.330.460.410.330.310.280.380.290.170.26 0.290.400.290.240.410.220.250.470.310.36 0.490.210.420.430.280.360.240.370.430.27 0.490.160.290.300.410.270.290.280.400.42 Reaction Time (s)TallyFrequency 0.15 ≤ t < 0.20 0.20 ≤ t < 0.25 0.25 ≤ t < 0.30 0.30 ≤ t < 0.35 0.35 ≤ t < 0.40 0.40 ≤ t < 0.45 0.45 ≤ t < 0.50

8. Collect data into groups, using a tally chart. Reaction Time (s)TallyFrequency 0.15 ≤ t < 0.20 0.20 ≤ t < 0.25 0.25 ≤ t < 0.30 0.30 ≤ t < 0.35 0.35 ≤ t < 0.40 0.40 ≤ t < 0.45 0.45 ≤ t < 0.50

9. Unit 16 Data Presentation Histograms with Unequal Class

10. You can not draw histograms with equal intervals as the data is not given in this way. So for each of the intervals, you need to give: Weight (grams)Frequency 0 ≤ w < 405 40 ≤ w < 506 50 ≤ w < 608 60 ≤ w < 704 70 ≤ w < 1002 Weight (grams)FrequencyFrequency Density 0 ≤ w < 405 40 ≤ w < 506 50 ≤ w < 608 60 ≤ w < 704 70 ≤ w < 1002 Now you can draw the histogram

11. Weight (grams)FrequencyFrequency Density 0 ≤ w < 405 40 ≤ w < 506 50 ≤ w < 608 60 ≤ w < 704 70 ≤ w < 1002