The following table collects information on the surface area of a group of stores: Surface m^2...

 

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The following table collects information on the surface area of a group of stores: Surface m^2 No. of stores 30 - 50 20 50 - 95 35 a) Obtain the modal interval. b) Calculate the average surface area of the stores. 95 - 110 30 c) Determine the surface area of at least half of the stores. d) Calculate the standard deviation. e) Obtain the interval that defines the central 60% of the surface distribution. f) If there is an extension of the surface of 5m2, calculate the previous sections. 110-130 15 The following table collects information on the surface area of a group of stores: Surface m^2 No. of stores 30 - 50 20 50 - 95 35 a) Obtain the modal interval. b) Calculate the average surface area of the stores. 95 - 110 30 c) Determine the surface area of at least half of the stores. d) Calculate the standard deviation. e) Obtain the interval that defines the central 60% of the surface distribution. f) If there is an extension of the surface of 5m2, calculate the previous sections. 110-130 15