Practice 4 - Analyzing and Interpreting Data

What is the benefit of creating a graph from a data set?

• we don't have to do any math

• it makes it easier to visualize trends

• it takes up less space

• it will boost your views/interactions

What is the first step in analyzing data in science classrooms?

• Writing a conclusion

• Organizing and graphing data

• Calculating statistics

• Conducting experiments

match the components of an investigation to their description

Groups:

(a) dependent variable

,

(b) control

,

(c) independent variable

,

(d) confounding variable

• the variable that you control in order to see its efffect

• something that might change your measured results but you have no control over

• gives you a baseline so that you can compare your results

• the variable that will change; usually the thing that you measure

Which type of graph is used to compare different groups?

• Line graph

• Scatter plot

• Bar graph

• Pie chart

What does a correlation value (R value) indicate?

• The color of the graph

• The fit of the data to a line

• The size of the data points

• The complexity of the data

What statistical measure helps understand the spread of data points?

• Mean

• Median

• Range

• Standard deviation