Observations, Inferences, Predictions
Variables
Data tables
Graphs
Measurement
100
Classify the statement as a qualitative observation, a quantitative observation, an inference, or a prediction.
"Ms. Landon has brown hair."
Qualitative observation
100
The temperature in a bedroom determines how many times a person rolls over in their sleep.
What is the independent variable?
The temperature in the bedroom
100
What is the mass of sample 4?
160 g
100
How many boys participated in canoeing?
20
100
What is the water level of the graduated cylinder?
48 mL
200
Which of the following is a quantitative observation?
A) The refrigerator is white
B) The refrigerator is a cube
C) the refrigerator is 6 feet tall
D) the refrigerator has magnets on it
C
200
The amount of water somebody drinks determines how many times they use the bathroom in a day.
What is the dependent variable?
The number of times someone uses the bathroom.
200
What was the average potato yield when fertilizer A was used?
33.3
200
What was the indoor temperature at 2:00 PM?
75 degrees
200
What is the temperature on the thermometer?
76 degrees
300
Is the following statement an inference or a prediction?
"Lake Hamilton is going to win the football game."
Prediction
300
The length of a dog's daily walk affects the hyperactivity of the dog.
Which of the following are NOT a control variable?
A) The type of dog
B) The location of the walk
C) the length of the walk
D) The person walking the dog
E) The hyperactivity of the dog
C, E
300
What sport do the most males play? The most females?
males- wrestling
females- swim
300
Which store had the most sales?
F
300
What is the mass on this balance beam?
266 g
400
"This person got a phone call that his dog got out of the backyard." What kind of statement is this?
Inference
400
The amount of cardiovascular exercise a person gets determines how long they can hold their breath.
Identify the independent variable, the dependent variable, and one control variable.
Independent- amount of cardiovascular exercise
Dependent- How long they can hold their breath
Control- type of exercise, person timing the breath holding, the timer used
400
Which substance(s) do not conduct electricity as a solid or when it's dissolved in water?
Glucose, fructose
400
What is the percentage of oil?
31%
400
How long is the pink line?
6.5 CM
500
Make 1 qualitative observation, 1 quantitative observation, 1 inference, and 1 prediction about the photo. You must get them all correct to get the points for your team!
Teacher approves the answer!
500
On which axis is the independent variable? On which axis is the dependent variable?
Independent- X, dependent-Y
500
What is the independent variable? The dependent variable?
Independent- pH of soil
Dependent- plant growth
500
Tree growth over a span of 10 years is recorded by a scientist. To make the data easier to read, the scientist wants to make a graph. What kind of graph is the best choice for this data?
Line graph because the data shows something changing over time.
500
What is the volume of the rock?
5 CC, 5 mL