1. Introduction
Scientific Methods — Quiz
Test your understanding of scientific methods with 5 practice questions.
Practice Questions
Question 1
In a marine science experiment, a researcher is testing the effect of water temperature on the calcification rate of corals. They measure the calcification rate at five different temperatures. Which of the following is the most appropriate statistical test to determine if temperature has a significant effect on the calcification rate?
Question 2
A marine biologist is designing an experiment to test the effect of nutrient enrichment on the growth of a seagrass species. They decide to randomly assign different nutrient concentrations to several experimental plots and measure the seagrass biomass after four weeks. Which of the following best describes the experimental design?
Question 3
A marine scientist is investigating the relationship between dissolved oxygen levels and the abundance of a particular fish species in coastal waters. They collect data on dissolved oxygen (in mg/L) and fish abundance (number of fish per square meter) at multiple sites. Which of the following is the most appropriate statistical test to analyze the relationship between these two continuous variables?
Question 4
In an experiment studying the effect of pH on the survival rate of juvenile marine snails, a researcher records the survival rate at four different pH levels. The data shows that survival rate decreases as pH decreases. Which of the following best describes the type of relationship between pH and survival rate?
Question 5
A researcher is designing an experiment to test the effect of varying salinity levels on the respiration rate of a marine worm species. They measure the respiration rate in worms exposed to five different salinity levels. After collecting the data, they want to determine if the mean respiration rates differ significantly among the salinity levels. Which of the following is the best statistical test for this analysis?