MATH 221 Week 1 Discussion | Devry University
- Devry University / MATH 221
- 20 Jan 2022
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- Mathematics Assignment Help / statistics
MATH 221 Week 1 Discussion | Devry University
1. Describe the difference between bar charts,
histograms, Pareto charts, including how they are structured and in what
situations are each most effectively used?
2.
Given the following data points, describe the steps to create a
histogram with 4 classes.
5 6 3 3 4
2 7 8 9 2 5 4
3 11 21 31 22 27 28 18
3.
Given the following data points, describe the steps to create a histogram with
3 classes.
5
6 3 3 4 2 7 8 9 2
5 4 3 11 21 31 22
27 28 18
4.
Given the following data points, describe the steps to create a histogram with
5 classes.
5
6 3 3 4 2 7 8 9 2
5 4 3 11 21 31 22
27 28 18
5. Describe the steps and then
find x¯
and s of the males and of the females as separate groups. Compare
these values.
Females: 43 48 54 55 33
48 62 68 54 61
Males: 62 55 54 59 21 22 50
59 62 38
6. Describe the steps and then
find x¯
and the median of males and of the females as separate groups. Compare
these values.
Females: 43 48 54 55 33
48 62 68 54 61
Males: 62 55 54 59 21 22 50
59 62 38
7.
Describe the steps and then find s and σ with different assumptions regarding
the data. Compare and discuss the differences.
5
6 3 3 4 2 7 8 9 2
5 4 3 11 21 31 22
27 28 18
8. The mean, median, and mode are each measures
of central tendency, used to describe the typical behavior of a data set.
Under what circumstances would each be the best choice to use to describe the
typical behavior of a data set? Why?
9. For
each of these variables, which of the mean, median, or mode would be the best
choice to describe the typical behavior of the variable? Why?
1.
Sales prices of houses
2.
Age of 1st graders
3.
Heights of women
10. Ethics: Find a graph or chart in the
news and describe the information provided. Was this graph the best
choice for presenting the data? Why or why not? How might the graph
mislead the reader, if at all?
USA 
India