Standard Deviation: Videos & Practice Problems

${\text{Range = 40 mg, Variance = 125 mg}}^2,\text{ Standard deviation = 11.18 mg}$

The results are highly representative of the general population since they cover a wide range of values.

${\text{Range = 30 mg, Variance = 250 mg}}^2,\text{ Standard deviation = 15.81 mg}$

The results are completely unreliable, and no conclusions can be drawn from such a small dataset.

 ${\text{Range = 20 mg, Variance = 125 mg}}^2,\text{ Standard deviation = 11.18 mg}$

The results perfectly reflect the caffeine consumption of all adults, as caffeine intake is the same for everyone.

${\text{Range = 40 mg, Variance = 250 mg}}^2,\text{ Standard deviation = 15.81 mg}$

The results provide some insights, but the small sample size limits their reliability in representing the general population.