Count the Stores

 

 

 

 

 

1)          Rank the four shopping centres from the one having the least number of stores to the one with the most number of stores.

 

Oakridge Mall (140), Pacific Centre (150), Richmond Centre (240), Metrotown (387)

 

 

2)          The “RANGE” of a set of data is the difference between the largest and smallest numbers.

What is the range of the above numbers?

 

        Range = 387 -140 = 247

 

 

3)          The “MEAN” of a set of data is the average of the set of data values.

Mean = sum of all the data values / the number of data values

What is the mean of the number of stores of the four shopping centres listed above?

 

Mean = (460+240+140+150) / 4 = 990 / 4 = 247.5

 

 

4)          The “MEDIAN” of a set of data is the data value in the middle of the set when the values are placed from smallest to largest. If there is no middle number, the median is calculated by taking the mean of the middle two numbers.

Find the median of the number of stores according to the values in the above table.

 

Median = (150+240) / 2 = 390 / 2 = 195

 

 

5)          The “MODE” of a set of data is the data value that appears the most often.

Does the above set of data values have a mode?

If so, what is the mode?

 

Yes. The modes are all 4 numbers : 460, 240, 150, 140, since they all appear once (the same frequency).

 

 

6)          If Oakridge Mall was renovated and 10 more stores were added, will the new set of data values have a mode?

If so, what is the mode?

 

Yes. The mode will be 150 because it appear twice in the data set.

 

 

7)          Based on the above set of data values, which shopping centre will you choose to take your visiting friends to? Why?

 

Answers may vary. But I would take my friends to Metrotown because of its large number of stores.