Biology Analyzing Data And Drawing Conclusions

Why are graphs useful when interpreting data? They make trends in the data easier to see. They are easier to create than data tables. They take the place of pictures in a report. They can be used to show additional data.

How does a good experimental conclusion differ from an inference? A conclusion relates the evidence to the hypothesis and inference is a guess. A conclusion explains data and an inference is predicts what will occur next. A conclusion provides less information to the reader than an inference. A conclusion is proven to be correct; an inference is disproved by evidence.

How can evidence from an experiment be explained in relationship to the hypothesis? as a prediction as a question as an inference as a conclusion

A good conclusion restates the hypothesis so that the reader does not have to return to the beginning of the report. sees how the scientist applied the results to the hypothesis. understands how the methods relate to the hypothesis. recognizes that the hypothesis was correct.

What is the most important reason to control the conditions of an experiment? to make the experiment easier to repeat to reduce the amount of data that must be recorded because this is necessary for graphing the data because this is necessary for the data to be valid

For a conclusion to be accepted by the scientific community, the data must be accurate, free from error, and reproducible. varied. unique. surprising.

Maria wanted to learn more about the birds that visit her backyard. She installed several bird feeders and offered a variety of bird seed mixes in order to attract a mix of species. For a month, she observed the bird feeders three times a day for an hour each day and counted the types of birds that she saw. Then, she made a pie chart to represent her findings. What is the most likely reason that she chose a pie chart? To show the total number of birds that she observed. To show the number of times that each bird visited the feeders. To show which bird species were most common. To show how the bird species changed over time.

Anjuli performed an experiment to determine the respiration rate of yeast. She determined this by measuring the amount of carbon dioxide (CO2) that was produced. Then, she created the following graph. mc017-1.jpg Her teacher suggested that she redraw her graph as a line graph. Why should she redraw the graph? A line graph looks better in a scientific report. She was measuring a rate of change. She had graphed the wrong relationship. Her experiment had many different variables.

Gerald performed an experiment to determine if photosynthesis was affected by the amount of light that a plant received. The data from his experiment are shown in the table below. Amount of light (hours) Number of plants Average volume of oxygen produced (mL) 1 4 0.50 6 4 2.0 10 4 5.0 Which format should he use to present his data? bar graph chart line graph pie graph

What is the most appropriate way to present the data below? Week Plant Mass (g) 1 22 2 61 3 87 4 123 bar graph chart line graph pie graph