Assignment: 9/9/21 Standard Deviation (Variation in a population)

AP BIOLOGY-A
2021-08-27T18:57:40Z

Due: Sep 9, 2021 by 11:59pm

Yes, the mean of a population does tell us something about the group, but it is possible for two groups to have identical means, but be very different due to the range of individual values in the population.

Today, we will spend class learning to calculate one measure of variation called standard deviation. The most important take home point about standard deviation is that this value indicates how spread out the data are. (Did everyone get an 85% on the test or did half the students get 100% and the other half 70%? Both scenarios would give a mean of 85%)

Please watch THIS VIDEO for a great overview of what Standard Deviation is showing us.

Yes, the mean of a population does tell us something about the group, but it is possible for two groups to have identical means, but be very different due to the range of individual values in the population.

Today, we will spend class learning to calculate one measure of variation called standard deviation. The most important take home point about standard deviation is that this value indicates how spread out the data are. (Did everyone get an 85% on the test or did half the students get 100% and the other half 70%? Both scenarios would give a mean of 85%)

Please watch THIS VIDEO for a great overview of what Standard Deviation is showing us.