Question

1. when would you use estimation?
2. what is the difference between accuracy and precision?
3. what is anomalous data?
4. which variable is on the x - axis of a graph?
5. a line graph that has a straight line is called
6. if a line graph is not a straight line, it is called
7. how are models useful?

Explanation:

1. Estimation is used when exact values are hard - to - obtain or not necessary, like in quick calculations or rough predictions.
2. Accuracy refers to how close a measurement is to the true value, while precision is about the consistency and reproducibility of measurements.
3. Anomalous data are values that deviate significantly from the rest of the data set, often indicating errors or unique phenomena.
4. The independent variable is typically placed on the x - axis of a graph.
5. A line graph with a straight line is called a linear graph.
6. If a line graph is not a straight line, it is called a non - linear graph.
7. Models are useful for simplifying complex systems, making predictions, and testing hypotheses.

Answer:

1. When exact values are hard - to - obtain or not necessary.
2. Accuracy: closeness to true value; Precision: consistency of measurements.
3. Values that deviate significantly from the rest of the data set.
4. The independent variable.
5. A linear graph.
6. A non - linear graph.
7. For simplifying complex systems, making predictions, and testing hypotheses.