A bar graph shows the number of pebbles found at different locations. The pebbles are classified into two categories: those 5 cm and over, and those less than 5 cm. i) What are the labels for the hori

Here are the answers to the questions regarding the bar graph:

i)
The labels for the axes are:

• Horizontal axis: Location
• Vertical axis: Number of pebbles

ii)
A suitable scale for the vertical axis would be from 0 to 30, with increments of 5. For example, $1 \text{ cm}$ on the axis represents 5 pebbles. This covers the maximum value of 28 pebbles.

iii)
To draw the bars for locations A and G:

• For Location A: Draw two adjacent bars. One bar for Category 1 (5 cm and over) should reach a height corresponding to 27 pebbles. The second bar for Category 2 (less than 5 cm) should reach a height corresponding to 3 pebbles.
• For Location G: Draw two adjacent bars, separated from Location A's bars. One bar for Category 1 (5 cm and over) should reach a height corresponding to 2 pebbles. The second bar for Category 2 (less than 5 cm) should reach a height corresponding to 28 pebbles.

iv)
A suitable key for the graph would differentiate between the two categories using distinct colors or patterns:

• [Color/Pattern 1] = Category 1 (5 cm and over)
• [Color/Pattern 2] = Category 2 (less than 5 cm)