Observation is made using one or more of the five senses. an independent variable is a variable that’s changed in an experiment. an explanation based on an observation is a/an there may be only one variable in an experiment. observation is made using tools or measurement. what’s the difference between an observation and inference?

1- Qualitative

2-  Not

3- Theory

4 - Independent

5 - Quantitative

Explanation:

The difference between Observation and Inference is quite simple.

The first is basically the data that was collected during the experiment.

The second is an information-based deduction or reasoning that uses the collected data to reach a conclusion. To infer is to infer a result, logically, based on the interpretation of other information, including the observations you have collected.

Distance to Centre = 212.13 m

Explanation:

Sides of a square are always the same. To obtain the distance to the centre of the pitch from any of the four corners :

The distance to the centre will be the the diagonal ÷ 2

Diagonal of a square : √2 * a

Where a = side length

Diagonal = √2 * 300

Diagonal = 424.26

Midpoint = diagonal /2

Midpoint or centre = 424.26 / 2

= 212.13 m