consider the following frequency distribution:

        classes                                   frequenceies

1 to less than 3                                        2

 3 to less than 5                                      5

5 to less than 7                                       12

7 to less than 9                                        6


1.calcuate the Mean , and the Standard Deviation of this distribution, interpret your result

2. find the class that includes the Median

3. what percent to the abservations are less than 7?



step by step to answer them

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