something you find out about objects, events, or living things using your senses
observation
100
ability to make a measurement that is as close to the actual value as possible
accuracy
100
What is the MODE of these numbers?
4 m, 9 m, 11 m, 11 m, 6 m, 12 m
11 m is the mode.
The mode is the most frequent number, or the number you see the most.
100
Science is based on which of these?
Facts or opinions
Facts
100
What is the MODE of these numbers?
7 cm, 4 cm, 5 cm, 8 cm, 1 cm, 3 cm, 1 cm
1 cm is the mode.
The mode is the most frequent number, or the number you see the most.
200
information from which a conclusion can be drawn or a prediction can be made
data
200
A statement of what you think will happen based on an investigation
hypothesis
200
In order for a scientific investigation to be considered valid, it must be able to be replicated.
True or False?
True
200
Why should scientists not base their investigations on opinions?
Opinions are personal beliefs that aren't always based on facts.
200
Give 2 examples of appropriate reference materials.
books, scientific journals, .edu or .org websites, encyclopedias are some examples
300
something that can change in a test
variable
300
the ability to consistently REPEAT a measurement
precision
300
What is the MEDIAN of these numbers?
8 in, 9 in, 5 in, 12 in, 7 in
FIRST, order the numbers from least to greatest:
5 in, 7 in, 8 in, 9 in, 12 in
Then cross out one from each end until there is one number left in the middle. 8 in is the median.
300
What is the RANGE of these numbers?
3 mm, 9 mm, 15 mm, 4 mm, 2 mm
15 - 2 = 13
13 mm is the range.
The range is the biggest number minus the smallest number.
300
What is the MODE of these numbers?
4, 9, 13, 11, 18, 7
No Mode
All of the numbers are seen once. There is no most frequent number in this set.
400
the use of scientific methods to test a hypothesis
experiment
400
step by step instructions for completing a task
procedures
400
What is the MEDIAN of these numbers?
6 ft, 8 ft, 14 ft, 2 ft, 10 ft
FIRST order the numbers from least to greatest:
2 ft, 6 ft, 8 ft, 10 ft, 14 ft
Then cross out one number from each end until a number is left in the middle. 8 ft is the median.
400
A valid scientific conclusion must be based on ___________, _____________, and _____________.
facts, observations, sound reasoning
400
Why are scientific journals and books appropriate reference materials?
They are appropriate because other scientists have written and reviewed them to make sure they are accurate.
500
a standard against which change is measured
control group
500
a conclusion based on observations
inference
500
The difference between accuracy and precision is ______________.
Accuracy is being close to the actual value, but precision is being consistent with your measurement.
500
Find the MEAN of these numbers.
5 cm, 4 cm, 3 cm, 2 cm, 1 cm
5 + 4 + 3 + 2 + 1 = 15
15 divided by 5 numbers = 3
3 cm is the mean
500
What is the MEAN of these numbers?
2, 6, 14, 2
2 + 6 + 14 + 2 = 24
24 divided by 4 numbers = 6
6 is the mean.