Analyzing Data and Drawing Conclusions Answers

You can control accuracy by choosing the appropriate tool or instrument and using it carefully. How could the students in the following questions improve their accuracy?Tyrrell wanted to measure the growth of tomato plants in response to different types of fertilizer. Which tool would be most accurate?

Which axis should be used to represent the dependent variable?

Rajesh designed an experiment to test the effect of fertilizer on plant growth. The table on the right shows the data he collected. Which changes should Rajesh make to his experiment to improve the validity of the data? Check all that apply.

Which variable is the dependent variable?

What type of graph should be created?

According to the graph, the pansies in which treatment group grew about 0.2 cm between weeks 2 and 3?

How much did the pansies receiving slow–release fertilizer grow from week 1 to 3?