Graphing Data by Hand

In an experiment investigating the effect of fertilizer on plant growth, which variable is typically plotted on the X-axis?

• Plant growth (cm)

• Fertilizer (g)

• Time (days)

• Temperature (C)

To visualize the correlation between two sets of numerical data, such as the amount of fertilizer and plant growth, which type of graph is generally used?

• Bar graph

• Pie chart

• Scatter plot

• Histogram

An experiment measures fertilizer amounts ranging from 2 grams to 12 grams. If the X-axis of a graph has 21 squares, what is the most effective scale per square to display this data?

• 0.25 grams/square

• 0.5 grams/square

• 1 gram/square

• 2 grams/square

Plant growth measurements in an experiment range from 18 cm to 98 cm. If the Y-axis of a graph has 15 squares, what is the most appropriate scale per square to ensure all data points are visible and the graph is well-utilized?

• 4 cm/square

• 5 cm/square

• 6 cm/square

• 10 cm/square