Which of the following types of graphs is best for plotting the mean, median, and mode of data?
question 6 options:

1) bar graph

2) box-and-whisker

3) circle graph

4) stem-and-leaf

1) Bar graph Its a diagram that uses proportional-width bars to compare data among categories.One can easily see the mode since the candidates with the same height of graph can easily be seen and at a specific mark.as for the median one can easily see the student who who has attained  am a mark thats in the middle.

Idon't know the answer

The scale factor of what ?