SOLUTION: The given frequency distribution describes the speeds of drivers ticketed in a 30​ mi/h speed zone. Find the standard deviation of sample data summarized in a frequency distr

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Question 1085880: The given frequency distribution describes the speeds of drivers ticketed in a 30​ mi/h speed zone. Find the standard deviation of sample data summarized in a frequency distribution table by using the formula​ below, where x represents the class midpoint and f represents the class frequency.
Answer by ikleyn(52898) About Me  (Show Source):
You can put this solution on YOUR website!
.
1. There is NO "given frequency distribution" in this post.

2. There is NO the promised formula below.


Clearly seen that the person who prepared and submitted this post does not understand (and does not think) what he is doing and for what purpose.