Bob Turner, Human Resources Manager for West Coast Fiberglass, is reviewing the operator training hours at WCF nationally. His staff compiled the following table of national statistics on operators training hours. What can Bob conclude about the training hours?
West Coast Region East Coast Region
Mean 32 38
Median 32 32
Mode 32 27
Standard Deviation 8 7
The East Coast distribution is skewed to the left.
The East Coast distribution is skewed to the right.
The West Coast distribution is skewed to the left.
The West Coast distribution is skewed to the right.
Both distributions are symmetrical.
The warehouse manager for an automotive parts distributor wants to analyze the entrance from the highway that trucks are taking when entering the yard and collect the following data based on several months worth of arrivals. He will use this data to determine where to plan for expansion in the future. He sees that trucks are not using the entrances equally, but wants to determine if there is truly a skewed pattern to the arrivals.
South North East West
Mean 20 28 21 26
Median 20 20 26 18
Mode 20 21 29 19
Standard Deviation 5 7 8 5
Based on his data, the south exit is __________________________.
symmetrical
skewed left
skewed right
unknown
Based on his data, the east exit is __________________________.
symmetrical
skewed left
skewed right
unknown
Based on his data, the north exit is __________________________.
symmetrical
skewed left
skewed right
unknown
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