Laboratory 1 Prelab Assignment F22

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Toronto Metropolitan University *

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143

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Statistics

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Jan 9, 2024

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5

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Laboratory 1 Prelab Assignment Name: Student No.: _______________ 1. How many bins would be appropriate for the data provided in Table 1.1? 2. Using the data provided and the instructions given in the manual, fill in the following Table. Table 1.1: Data Summary of Earthworm response time Bin # Range (ms) Number of Observations Bin 1 11-20 2 Bin 2 21-30 Bin 3 Bin 4 Bin 5 Bin 6 Bin 7 Bin 8 Bin 9 3. What is your independent variable? (remember this is the variable that we are changing in our experiment) 4. What is your dependent variable? (remember this is the parameter that we are measuring in our experiment) 5. When is it appropriate to use each of these different types of graphs and for what type of data are they used for? Bar graph: Histogram: Line graph: Pie chart:
6. Using the information gathered so far, plot a histogram providing proper titles for each axis as well as the graph. Figure 1.1: ___________________________________________________________________ 7. What bins represent the central tendency of this data? I.e., where are the majority of the earthworms found that are doing the same thing (in our case have similar response times). 8. What is the standard deviation for the data provided?
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Individual Exercise 9. What is your observation? 10. State your research question 11. Provide both hypotheses as related to your research question. Null hypothesis Alternate hypothesis 12. What is your dependent variable? 13. What is your independent variable? 14. What are your controlled variables? 15. Give a brief description of how you would set up your experiment using the 10 worms selected from the central tendency analysis to answer your research question.
16. Using the data of 8 Yes and 2 No, perform a Chi-square test. Show your work. 17. Draw your conclusion and determine if you accept or reject your null hypothesis use a critical value of the Chi Square test of 3.841

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