Statistical Data Handling - General

1. A school plans to survey the students’ weekly exercise time through questionnaires. Which statistical diagram (pictograph, bar graph, pie chart or line graph) is more appropriate to display the grouped data in a more quantifiable way? State your reasons clearly.
2. An economist plans to investigate the percentage market share of \(5\) beverage brands in beverage consumption market in a city. Which statistical diagram (pictograph, bar graph, pie chart or line graph) is more appropriate to display the data to compare each brand with the whole market? State your reasons clearly.
3. A botanist plans to record the height changing of a plant over a certain period of time. Which statistical diagram (pictograph, bar graph, pie chart or line graph) is more appropriate to display the data to illustrate the trend of the height changing over time? State your reasons clearly.
4. Mr. Tan wants to open a restaurant. In order to determine the types of food on menu, he asked his wife, parents and two children’s ideas and collected as survey data. Explain, with clear reasons, why Mr. Tan’s method of investigation is inappropriate.
5. Carol wants to investigate the most popular TV programmes in the community she lives in. To collect data, she sent out questionnaires among students in a local primary school and collected the following data:

Hence Carol draws the conclusion that Cartoons are the most popular TV programmes in the community. Explain, with clear reasons, why Carol’s method of investigation is inappropriate.