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Tools of Scientists
Term | Definition |
---|---|
quantitative data | data that can be measured such as length , width and height and is shown as a NUMBER |
qualitative data | descriptive data that cannot be measured such as colors, smells, tastes and is usually an ADJECTIVE |
data | information that is gathered during an investigation and may be recorded in tables, charts, graphs, or drawings |
data analysis | organizing results into tables and graphs to look for patterns |
bar graphs | uses bars to show the relationship among variables |
circle graphs | used to show how a complete set of data is divided into parts. All the data must add up to 100% |
line graphs | show the relationship between two variables. They have a line connecting data points. |
description | a summary of observations such as smells, colors that may be spoken or written |
explanation | an interpretation of observations that explain how or why something occurred |
precision | how close repeated measurements are to each other |
consistency (accuracy) | the ability to repeat a task with little variation ON TARGET |
graphs | used to organize and summarize data in a visual way |
tables | display information in rows and columns |
statistics | the study of data: how to collect, summarize and represent it. |
mean | the sum of the numbers in a data set divided by the number of entries in the data set |
median | the middle number in a set of data when the data are arranged in numerical order |
mode | the number that appears the most in a set of numbers |
range | the difference between the highest and lowest values |