Name:
RECORDING AND ANALYZING
DATA
Recorded
observations and measurements are called data. Scientists often record their observations in
data tables. Data tables are a simple, organized way of
recording information from an experiment.
Sometimes, however, it is useful to visually compare the data. To do so, a scientist might construct a graph
on which to plot the data. When the data
tables have two different types of measurements (example: time and
temperature), the graph would have two axes.
The horizontal axis of the graph would stand for the time
measurement. The vertical axis of the
graph would stand for the temperature measurement.
Below is some data
determining whether salt affects the freezing temperature of water. Organize this data into two tables. The first table will be the control setup, WATER.
The second table will be the experimental setup, WATER WITH SALT. After
creating two data tables for this data, a line graph needs to be made for each
table..
WATER WATER WITH SALT
(Control setup) (Experimental setup)
TIME TEMPERATURE TIME TEMPERATURE
0 25 0 25
5 20 5 20
10 15 10 15
15 10 15 10
20 5 20 5
25 0* 25 0
30 -10 0 -10*
*Asterisk means liquid has frozen.