Petunia Experiment - We are conducting this experiment because we wanted to research the affect of music on plant growth.

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Petunia Experiment

Introduction

We are conducting this experiment because we wanted to research the affect of music on plant growth. The theory is that music will help plants, or in this case petunias, to grow faster/bigger. We are using three different types of music and are studying which has the greatest affect on the growth of the petunias.

This would mean that the cause construct of the theory is music, with the effect construct being plant growth. So our experimental hypothesis is: "Type of music has a significant effect on the height of petunias" causing our null hypothesis to be "Type of music does not have a significant effect on the height of petunias." We are hoping that by carrying out this experiment we will prove one of our hypotheses.

Procedure

For this experiment we used an independent measures design as plants may well go through growth spurts at different times in their lives like us. So without doing extra research and finding out they grow at a steady pace throughout the whole of their lives, a repeated measures design would be completely unsuitable.

Our independent variable (or IV)