Analyzing Data and Drawing Conclusions Answers

For a conclusion to be accepted by the scientific community, the data must be accurate, free from error, and

Mario 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 plantsAverage volume of oxygen produced (mL)1 40.50642.01045.0What could he have done to increase the validity of his data?

A good conclusion restates the hypothesis so that the reader

What is the most important reason to control the conditions of an experiment?

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.Her teacher suggested that she redraw her graph as a line graph. Why should she redraw the graph?

Denise was measuring the effect of temperature on the amount of dissolved oxygen that water can hold. She hypothesized that as water temperature increases, the amount of oxygen that is dissolved in water increases. Her data are shown in the table below.Water temperature (ºC)Dissolved oxygen (mg/L)512.51011.01510.2209.1258.3Which conclusion did Denise most likely write in her lab report?

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?

How does a good experimental conclusion differ from an inference?

Gerald performed an experiment to determine if photosynthesis was affected by the color of light that a plant received. The data from his experiment are shown in the table below.Color of LightNumber of plantsAverage volume of oxygen produced (mL)green40.50orange42.0blue45.0Which format should he use to present his data?

The pH scale measures the acidity or the basicity of a solution. Solutions that have a pH below 7 are acids. Solutions that have a low pH are more acidic than solutions that have a higher pH. The graph below shows the pH of four common fruit juices. A student studying acidity of juices did a taste test and determined that the orange juice was the sweetest juice and the lemon and lime juices were the sourest. Based on this information, which is the best inference the student could make about acidity?