Question

graph: make a bar graph to show your data. include a title, label the x - axis, the y - axis, and include a key/legend
data table: dishwashing soap brand bubble diameter in centimeters (cm)

	a	b	c
trial 2	12 cm	10.5 cm	23 cm
trial 3	19 cm	7 cm	13 cm
trial 4	9.5 cm	7 cm	17 cm
average

Explanation:

Step1: Calculate the average for each soap brand

For Brand A: $\frac{14.5 + 12+19 + 9.5}{4}=\frac{55}{4}=13.75$ cm
For Brand B: $\frac{13+10.5 + 7+7}{4}=\frac{37.5}{4}=9.375$ cm
For Brand C: $\frac{17.5+23+13+17}{4}=\frac{70.5}{4}=17.625$ cm

Step2: Prepare for bar - graph creation

The x - axis will be labeled "Soap Brand" with values A, B, C. The y - axis will be labeled "Bubble Diameter (cm)". The title of the bar - graph can be "Bubble Diameter of Different Soap Brands". The key/legend can be used to clarify any additional information if needed.

Answer:

Average bubble diameters: Brand A: 13.75 cm, Brand B: 9.375 cm, Brand C: 17.625 cm. Bar - graph should have x - axis labeled "Soap Brand", y - axis labeled "Bubble Diameter (cm)", title "Bubble Diameter of Different Soap Brands" and include a key/legend.