IB Biology: C1.3-Quantitative and Qualitavie Data

Front

What is quantitative data?

Back

Data based on measurements or counting, such as curvature of seedlings.

Front

What is qualitative data?

Back

Data in the form of descriptions, such as appearance of cotyledons or first shoot appearance.

Front

Define accuracy in measurements.

Back

How close a measured value is to its true value.

Front

Define precision in measurements.

Back

How explicit or definitive a measured value is. Reliable measurements are both accurate and precise.

Front

How can accuracy of measurements be increased?

Back

By using measuring devices correctly and carefully.

Front

How can reliability of data or measurements be increased?

Back

By increasing the number of replicates or measurements and finding the average.