Question 1: Draw a bar chart to represent the number of students in each of four classes: Class A - 25 students, Class B - 40 students, Class C - 15 students, Class D - 30 students. Label each bar accordingly.

Answer: See drawing

Question 2: Plot the bar chart for the following data: Hours studied per week - 0-2 hours: 8 students, 3-5 hours: 12 students, 6-8 hours: 5 students, 9+ hours: 3 students.

Answer: See drawing

Question 3: Construct a bar chart to show the frequency of different fruit types in a basket: Apples - 12, Bananas - 20, Oranges - 15, Grapes - 10.

Answer: See drawing

Question 4: In a bar chart, the bar for 'Cars sold' is twice as tall as the bar for 'Bikes sold'. If the Bike bar reaches a height of 4 units, what is the height of the Cars bar?

Answer: 8

Question 1: A bar chart shows the number of books read by students over the summer: 10, 15, 20, 25, 30. The tallest bar is 6 cm high. Draw the chart and determine the number of books read if a bar is 4.5 cm high.

Answer: 15 books

Question 2: Given a bar chart where the height of each bar represents the number of students choosing different subjects, if the 'Math' bar is 5 cm high and corresponds to 25 students, what is the scale used for the chart? Show your working.

Answer: 1 cm = 5 students

Question 3: A bar chart illustrates sales of four products in units: P1 - 100, P2 - 150, P3 - 200, P4 - 250. If the height of the P4 bar is 5 cm, find the height of the P1 bar.

Answer: 2 cm

Question 4: Explain how you would check if a bar chart is accurately drawn to scale from given data.

Answer: Compare the ratio of bar heights to data values, ensuring proportional representation based on a consistent scale.

Question 1: A survey shows the following favorite sports among students: Football - 40, Basketball - 25, Tennis - 15, Cricket - 20. Draw a bar chart representing this data. Which sport is the most popular?

Answer: Football

Question 2: A company tracks weekly sales: Week 1 - 200 units, Week 2 - 250 units, Week 3 - 225 units, Week 4 - 275 units. Draw a bar chart to represent this data and identify which week had the highest sales.

Answer: Week 4

Question 1: Construct a composite bar chart showing three categories: 'A', 'B', 'C' with data points: A - 20, 35, 50; B - 25, 40, 45; C - 30, 50, 55, across three different groups. Ensure proper scaling and labelling.

Answer: See drawing

Question 2: Describe how to modify a bar chart if the data includes negative values, ensuring accurate visual representation.

Answer: Include bars extending below the baseline for negative values, maintaining proportional scale, and label axes clearly.

Question 1: A student draws a bar chart with the data: 10, 20, 30, 40. The bars are incorrectly scaled, with the first bar twice as tall as the second. Identify and explain the mistake, and describe how to correct it.

Answer: Incorrect scaling; bars should be proportional to data values. Correct by using a consistent scale for all bars.

Question 2: A bar chart shows the number of students using the bus: 15, 25, 35, 45. The heights of bars are 1.5 cm, 2.5 cm, 3.5 cm, and 4.5 cm respectively. Is the chart correctly scaled? Justify your answer.

Answer: Yes, the scale is consistent with each unit of data corresponding to 0.1 cm.