graphs and evaluation2

accurate

how close the measurement is to the true value

precise

the closeness of repeated measurements to each other

valid

The suitability of an experiment to truly answer the original scientific question

repeatable

when the same person does an experiment again and gets similar results

reproducible

when a different person follows a method and achieves the same findings

anomalous

A result that does not fit the pattern of the other data.

average

a value that represents a typical or central amount in a set of numbers

range bars

lines on a graph showing the highest and lowest values of repeats

evaluation

A critical look at an experiment to identify its strengths and weaknesses

hypothesis

A scientific explanation or prediction that can be tested through an investigation.

apparatus

The collective set of tools, equipment, or machinery needed for an experiment

method

A set of step-by-step instructions describing how to perform an investigation

reliable

the measurements and results are consistent and repeatable

confirmation bias

occurs when a scientist unintentionally ignores data that contradicts their original hypothesis

How can we define precise for a lone measurement

how specific, exact, or finely measured something is

independent variable

the variable you change

dependent variable

the variable you measure

continuous

a variable that can have any number value

discontinuous

a variable that is a word or group

discrete

a variable that has whole number values

control

what you keep the same

if the independent variable is a number you should draw…

a line graph

if the independent variable is a word i should draw…

a bar graph

the independent variable goes on the…

x- axis

the dependent variable goes on the..

y-axis

what graph?

line graph

what graph?

line graph

what graph?

bar graph

if the independent variable is a number then you should draw..

line graph

if your independent variable is a word you should draw..

bar graph

what does the line of best fit do?

It shows us the trend or pattern of our results

A line graph should be used when…

the independent and dependent variables are continuous

A bar graph should be used when..

when the independent variable is categoric

What are the components of a conclusion?

Describe the patterns, make a summary, was your prediction correct?Answer the question. Explain the conclusion- find science to explain the conclusion, could you extend? Evidence? Observation.How and why the evidence supports the claim. Comparing to other results.

what is correlation?

The relationship between two sets of data. Usually described as positive or negative.

what is positive correlation

as one variable increases, so does the other variable.

what is negative correlation?

as one variable increases, the other variable decreases. 

what is no correlation

no connection between the two variables.