esearch question 1: How does time since germination affect oxygen production in
ID: 97629 • Letter: E
Question
esearch question 1: How does time since germination affect oxygen production in pea plants? a) IV: Five peas each will be obtained that have been growing for 1 month, 1 week, and some will be non-germinated (15 total peas) b) DV: Pea oxygen production will be measured using an oxygen sensor. This reads in ppm/min values c) Is the IV continuous or categorical? d) Is the DV continuous or categorical? e) What type of graph would best represent these data? f) How does this graph answer your research question? chers are interested in the variability (range of values) in the Research question 2: Researchers are interested in the variability (range of values) in 1 heights of two groups of people. Specifically, they are asking. "How much variability is here in the heights of people who never ate vegetables versus those people who constantly eat vegetables?" a) IV: Five people each will be mea sured that have never eaten vegetables and that constantly eat vegetables (10 people total) b) DV: The height of each person will be measured using a measuring tape c) Is the IV continuous or categorical? d) Is the DV continuous or categorical? e) What type of graph would best represent these data? f) How does this graph answer your research question?Explanation / Answer
Answer:
Based on the given information:
Research question 1:
a) IV: Five peas each will be obtained that will be growing for 1 month, 1 week and some will be non germinating.
b) DV: Pea oxygen production will be measured using an oxygen sensor. This reads in ppm/min values.
c) Is the IV continuous or categorical? - IV is categorical since there are three categories of peas 1) growing for 1month 2) growing for 1 week and 3) non germinating
d) Is the DV continuous or categorical? - DV is continuous variable, since its the measurement of the oxygen in ppm/min value obtained using a sensor.
e) What type of graph would best represent this data? - A bar graph with oxygen measurement values as the Y-axis and category of peas as the X axis would best represent this data.
f) How does this graph answer your research question? This graph would provide useful information about the amount of oxygen produced by plant at different time of growth and germinating vs non germinating.
Research question 2:
Variability in the height of people who never ate vegetables vs variability in the height of people who constantly ate vegetable
a) IV: Five people each will be measured that have never eaten vegetables and that constantly eat vegetables
b) DV: The height of each person will be measured using a measuring tape
c) Is IV continuous or categorical: IV is categorical as there are two categories of people - one that have never eaten vegetables and the second category of people that constantly eats vegetables.
d) Is DV continuous or categorical: DV is continuous as the measurement of the height of person will be a continuous variable.
e) What type of graph would best represent this data: This data can be represented using a box plot. Box plot provides useful information about the range of data and two groups can be compared by plotting two box plots - one corresponding to each category.
f) How does this graph answer your research question: This graph would provide useful information regarding the effect of whether a person eats vegetable or not on the variability of their height.
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