Is 17 the average of the data shown in the dot plot below? Share the method you used to answer this question. Class 8

Is 17 the average of the data shown in the dot plot below? Share the method you used to answer this question. Class 8

Question 1.

Is 17 the average of the data shown in the dot plot below? Share the method you used to answer this question. Class 8

Solution:

Average

So, 17 is not the average of this data.

Question 2.

The weights of people in a group were measured every month. The average weight for the previous month was 65,3 kg and the median weight was 67 kg. The data for this month showed that one person has lost 2 kg and two have gained 1 kg. What can we say about the change in mean weight and median weight this month? Class 8

Solution:

Mean weight will remain the same, while nothing can be said about the median weight.