Science Data Analysis

What is the dependent variable?

• amount of fertilizer

• number of plants

• height of plants

• type of fertilizer

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Donna has observed that her father can control the speed of their grandfather clock by adjusting the height of the weight on the end of the pendulum. Donna thinks that the pendulum will move faster when the weight is lowered, and wants to test her idea. Donna gets a stopwatch and measures the time it takes for the pendulum to swing twenty times when the weight is moved to its lowest position. Donna begins to move the pendulum up by 1 cm and continues to measure the time for twenty swings of the pendulum. Donna records her data.
What is her hypothesis?

• If we change the height of the weight, then the pendulum will move faster at a lower height.

• If we change the pendulum weight, then it will move faster.

• The lower the weight the faster the pendulum will swing.

• The height of the weight affects the pendulums speed.

A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 
Which is the best conclusion for this experiment? 

• Acid has no effect on the health of this type of plant

•  High acidity is helpful to this type of plant.

• Low acidity is harmful to this type of plant.

• High acidity is harmful to this type of plant.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Squidward found new reeds to tryout for his clarinet. He used an APPLAUSOMETER to measure applause after playing Under the Sea with each reed. The results were put in the table.

What was the dependent variable?

• The Song

• The Reed

• The Applause

• The Clarinet

According to the diagram, which question is being tested?

• Do plants grow taller when watered with salt water?

• How much fertilizer do plants need?

• Does fertilizer make plants grow taller?

• What is the best fertilizer to use?

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which variable is changed on purpose in an experiment?

• dependent

• independent

• constant/control

• none

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• The type of plant

• The amount of sunlight

• The type of music

• The type of liquid

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the primary purpose of data analysis in scientific research?

• To prove a hypothesis

• To interpret and draw conclusions from data

• To collect data

• To publish research findings

Which of the following is a common method used in science data analysis to determine the relationship between two variables?

• Regression analysis

• Random sampling

• Data collection

• Hypothesis formulation

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

In an experiment, a scientist collects data on the growth rate of bacteria at different temperatures. What type of data analysis might they use to determine the optimal temperature for growth?

• Descriptive statistics

• Inferential statistics

• Qualitative analysis

• Predictive modeling

Tags

NGSS.MS-PS3-4