1. Introduction

Data Handling — Quiz

Test your understanding of data handling with 5 practice questions.

Practice Questions

Question 1

A marine scientist is investigating the impact of a new pollutant on the reproductive success of a specific fish species. They expose different groups of fish to varying concentrations of the pollutant and record the number of viable offspring produced by each group. Which of the following represents the dependent variable in this experiment?

Question 2

When constructing a graph to show the relationship between two continuous marine variables, such as ocean depth and pressure, which axis typically represents the independent variable?

Question 3

A marine biologist is analyzing data on the growth rate of coral under different light conditions. The growth rates (in mm/month) for a specific light condition are: $2.3, 2.5, 2.1, 2.4, 2.6. What is the mode of these growth rates?

Question 4

Which of the following statistical measures is most appropriate for describing the spread or variability of a marine dataset, such as the range of temperatures recorded at a specific ocean depth?

Question 5

A marine scientist is studying the effect of nutrient enrichment on the biomass of algae in a coastal ecosystem. They set up several experimental tanks with varying nutrient concentrations and measure the algal biomass after two weeks. What is the independent variable in this experiment?