Mark conducted a study where different plants were exposed to varying amounts of sunlight to determine how it affected their growth. What kind of data collection method is used?   Group of answer choicesExperimentationObservationQuestionaireInterview

8. A researcher has a study on how the amount of water affects plant’s growth. What data collection method is best to use?*questionnaireinterviewobservationexperiment

In an experiment, a researcher manipulates the amount of sunlight plants receive and measures their growth. What is the manipulated variable (independent variable) in this study?Group of answer choicesTimeAmount of sunlightTemperaturePlant growth

Francis is collecting data on where his fish friends like to go for holiday. He sends them a questionnaire by email to find out. What type of data collection method has he used?

Maria hypothesizes that the amount of light in an environment affects the growth of algae living in that environment.Which of the following is the best type of investigation for Maria to perform in order to test her hypothesis? A. collect and observe different specimens of algae B. conduct a controlled experiment C. observe algae in nature D. build a computer model of algae growth

Which example of data set can only be summarized by the mode?A) Harvest per farmB) Exam scoresC) Preferred climate