Note: Purpose statement is more specific than the question, and includes independent and dependent variables, as well as the control variables. A hypothesis is a trial solution to a research problem. From Science Example 1 Hypothesis (MASF Student Guide, p. 20) If plants are exposed to and shielded from microwave radiation, the Independent Variable(variable you plan to plants exposed to microwave radiation will have a lower health index. “If manipulate) (p. 2) is The independent variable is the microwave radiation exposure. how you plan to change it , then The dependent variable is plant health, determined by weekly Dependent Variable (variable you expect growth and rate of photosynthesis. will The constant variables include type of plant, type of soil, pot size, amount of water, watering schedule, light source, amount of light, change) will What you think will and temperature. happen, because (p. 2 not this example does not quite follow the guidelines missing – – the specific research that supports your hypothesis) Use cited source from right column to support your hypothesis.” (This document, p. 10) Independent, Independent and dependent variables have the potential From Science Example 1 dependent & answer to your research question. The independent variable is the microwave radiation exposure. constant Independent variable: The quantity that you vary The dependent variable is plant health, determined by weekly variables systematically. This variable is plotted on the x-axis. The growth and rate of photosynthesis. successive increments in the independent variable are The constant variables include type of plant, type of soil, pot size, often consistent. In physics projects, time is frequently amount of water, watering schedule, light source, amount of light, the independent variable. and temperature. Example: When measuring the of a runner over time, (p. 2) time is the independent variable. Speed is the dependent variable. Dependent Variable: This quantity changes as a result of you changing the independent variable and depends on the independent variable. The dependent variable is plotted on the y-axis.
Note: Purpose statement is more specific than the question, and includes independent and dependent variables, as well as the control variables. Hypothesis A hypothesis is a trial solution to a research problem. (MASF Student Guide, p. 20) “If Independent Variable(variable you plan to manipulate) is how you plan to change it , then Dependent Variable (variable you expect will change) will What you think will happen, because Use cited source from right column to support your hypothesis.” (This document, p. 10) From Science Example 1 If plants are exposed to and shielded from microwave radiation, the plants exposed to microwave radiation will have a lower health index. (p. 2) The independent variable is the microwave radiation exposure. The dependent variable is plant health, determined by weekly growth and rate of photosynthesis. The constant variables include type of plant, type of soil, pot size, amount of water, watering schedule, light source, amount of light, and temperature. (p. 2 – not this example does not quite follow the guidelines – missing the specific research that supports your hypothesis) Independent, dependent & constant variables Independent and dependent variables have the potential answer to your research question. Independent variable: The quantity that you vary systematically. This variable is plotted on the x-axis. The successive increments in the independent variable are often consistent. In physics projects, time is frequently the independent variable. Example: When measuring the of a runner over time, time is the independent variable. Speed is the dependent variable. Dependent Variable: This quantity changes as a result of you changing the independent variable and depends on the independent variable. The dependent variable is plotted on the y-axis. From Science Example 1 The independent variable is the microwave radiation exposure. The dependent variable is plant health, determined by weekly growth and rate of photosynthesis. The constant variables include type of plant, type of soil, pot size, amount of water, watering schedule, light source, amount of light, and temperature. (p. 2)