MAth102

MTH 102 Data Visualization Activities

Part 1: Ways of Visualizing Data

A. On the right-hand side construct a stem and leaf plot for the following data:

64	98	96
93	70	97
74	67	63
71	80	57
80	77	43
67	78	52
65	92	53
65	87	62
65	43	64
66	64	50

Using your stem and leaf plot identify the range of the data: _____________

B. Next create a histogram to represent this data. You may choose as many bins as you would like, though 10 is normally the ideal number.

a. Indicate the number of bins for your histogram: ________

b. What size should your intervals be? Show your calculations: ______________________________

c. Fill out the following table to indicate your midpoints and intervals, which will serve as bins

Midpoints	Bins/Intervals	Frequency

d. Use the table you constructed in part c to create your histogram. Label each part. Indicate your intervals below the histogram and have each bin be two squares wide. Use the graph paper below

e. Is the graph skewed? Is it unimodal or bimodal?

f. Are 10 bins appropriate in this circumstance? Does it show enough variation in the data, or should be make fewer/more bins?