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AMDM Stats Project
Transcript of AMDM Stats Project
Amelia and Andrew Descriptive Statistics: Experimental Study Charts/Graphs Statistical Bias Technical Report BIG Question: Observational vs. Experimental Study 1. How does music affect plant growth?
2. Do vibrations affect plants by slowing down/speeding up their growth?
3. Is there any way to speed up the growth of plants? How does music affect plant growth? 1. We are doing an experimental study. We think this study is best because we would have no results if we did an observational study; also, because there's no reason to conduct an observational study to receive no data.
2. We chose experimental over observational because with experimental, our information would be more accurate due to the data we are collecting.
3. We are studying the affect of music on plant growth because it can help us to better understand the impact of music on living organisms. Null: (H0)- µ Music has an affect on the growth of plants.
Alternative: (Ha)- µ Music does not affect the growth of plants. Ethical Principles and Guidelines: Population: Our population is 6 plants. 1. Explain how you ensured that the Ethical Principles and Guidelines were used to protect your participants.
A. Respect for person
I. We are using plants, not people.
I. It can benefit anyone who wants to help his/her plants to grow better.
C. Informed Consent
I. Consent is not required from plants
D. Assessment of Risk and Benefits
I. Risk and benefits don't apply to plants
E. Selection of subjects
I. We're using plants 1. What are your treatments?
A. Playing rock for the first plant, classical music for the second, and no music for the
2. How will your participants be grouped?
A. In pairs; two for rock, two for classical, and two for no music.
3. Explain the control group for your project.
A. Our control group is the pair of plants that aren't being treated to any kind of music.
4. Explain the placebo for your project.
A. We aren't using a placebo because we don't need to convince our "participants" in
the control group that they're being exposed to a certain type of music. Sampling Method 1. What method are you going to use for your project?
A. Simple random sampling
2. Why is this the best method?
A. Each member of our population has an equal and known chance of being selected.
3. Specifically how you will go about doing this.
A. I will go to two seperate stores to purchase 3 pea plants from each. (one for each of the three groups)
4. How a bias could occur.
A. Someone might say that Harry's Farmers Market may not have "the best plants
around." From this graph, we can conclude that classical music has a very positive impact on the growth of a plant. Also, we can conclude that rock music has the least impact on the growth of a plant. We can conclude from this graph that rock music doesn't have a negative impact on the growth of a plant. Also, that it's growth rate is slower than that of the plants exposed to either classical/no music. From this graph, we can conclude that classical music has a rather positive affect on the growth of a plant. In fact, we can infer that plants exposed to classical music tend to grow faster than those exposed to rock/no music. In conclusion, we can see that not exposing a plant to any music, of course, doesn't have a negative affect on the growth of the plant. But, we can also see that exposing a plant to rock music instead of no music, actually has a negative impact on it's growth. Statistical bias could have applied to our project if someone, perhaps, did not like that stores we purchased our plants from, Harry's Farmers Market and Wal-mart. Statistical bias also could exist if the person didn't like pea plants or had something against growing them. To avoid this probkem, we could have used a larger sample size. Also, our range isn't large enough. Overall, if our sample size and range were to be larger, statistical bias would be minimized. Our stores we picked to purchase our plants from, only apply to Marietta, Ga. They are not universal stores so bias would also exist in that case becuase if the experiment was to be done somewhere else in the world, the final data gathered would differentiate. 1. Did your data confirm your original thoughts about your research question?
a. Our data was different than what we had originally expected before performing our experiment.
Although we were not fully convinced that playing music would affect our plant growth, we still
wanted to follow through with the experiment to see if it would actually affect the growth. We
found out that music does in fact affect the pea plant's growth.
2. What were you surprised about?
a. Our group was actually surprised that the music played did in fact affect the growth of the pea
plants. We reviewed studies that had shown small growth affects due to different genre's being
played but we did not actually believe that this was a possibility. By successfully doing this
experiment, we found out that music does affect the growth of plants.
3. Do you feel your data captured useful information? Why/why not?
a. Yes, because the information we found could be very useful to people in the business of plant
growing. Botanists or flower shop owners might want to consider playing music to speed up their
plant's growth process. Most importantly, the information was useful to our group because we
found the answer to our initial question: Does music affect plant growth?
4. What additional questions arise from your research?
a. By completing this experiment, a few other questions arose. Does the speed of plant growth affect
the quality of the plant? Does music make the flower more fragile and/or likely to die sooner, rather
than a plant growing under normal circumstances? Could a plant whither from a specific type of
music being played, such as metal, hard rock, rap, etc.
5. How could you use your data persuasively?
a. We could use our data persuasively by the presentation of the data. Using
pictures/displays/graphics of the plants day by day growth would be very persuasive and beneficial
to the audience. Making sure our numbers are accurate and precise would help as well.