If you have a large range for your measurements, your uncertainty in both the mean and in a single measurement will also be large and is denoted as option B.
This refers to a collection of quantitative or numerical data which describes the property of an object and examples include length, ,mass, density etc.
We were told that there is a large range for measurements with an uncertainty in both the mean and in a single measurement which means it can be any number or digit.
This therefore means that the uncertainty in both the mean and in a single measurement will also be large as there is no variable to predict the most likely number in this scenario.
This is therefore the reason why option B was chosen as the most appropriate choice.
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