Representation of Data

These are questions on representation of data. They cover concepts on the following;
-pie charts
-line graph
-bar chart

Transcript

1. Worksheet 23: Represent Data Grade 9 Question 1 Identify the type of graph from the images below: a) b) c)
2. 2 d) e) Question 2 Read each story below and identify if it is an example of discrete or continuous data. You also need to recommend the type of graph you would use. a) A car manufacturer has 4 different models of cars, and each car model comes is 6 different colours. He records his data in a spreadsheet and represents in graphically. b) The height of all the grade 9 students at your school are recorded and displayed graphically. Question 3 a) The school tuck-shop records the number of units sold for each item. Represent this data using a pie chart. Food Number of units sold Hotdogs 76 Pizza 52 Hamburgers 40 Pies 26 Toasted sandwiches 56
3. 3 b) The marks for Term 2 exams are recorded below: Display the results as a histogram. Marks as a percent Frequency 0 ≤ 𝑥 < 10 1 10 ≤ 𝑥 < 20 2 20 ≤ 𝑥 < 30 4 30 ≤ 𝑥 < 40 9 40 ≤ 𝑥 < 50 23 50 ≤ 𝑥 < 60 19 60 ≤ 𝑥 < 70 12 70 ≤ 𝑥 < 80 9 80 ≤ 𝑥 < 90 4 90 ≤ 𝑥 ≤ 100 2 c) Students recorded the temperature at school every 2 hours in the diagram below. Represent this data as a broken-line graph: Time Temperature 07:00 12℃ 09:00 15℃ 11:00 18℃ 13:00 21℃ 15:00 25℃ 17:00 22℃
4. 4 d) A study was done to examine the impact the weather has on the number of cold drinks sold. Represent the data as a scatter plot graph. Temperature Cold drinks sold 16℃ 18 18℃ 20 20℃ 14 22℃ 28 24℃ 32 26℃ 30 28℃ 45 30℃ 50 32℃ 52