Label all points
In this portfolio project, you will be collecting a set of data and analyzing the characteristics of the distribution Provide yourself with plenty of time to complete step 1 Part 1 Collect a set of data with at least 30 data points. The data should be quantitative, which means that it should be measured using numbers. You can be as creative as you'd like, but here are some suggestions for things that you can survey. the heights of a large number of people the number of pages in a set of books on bookshelf the number of hits eared by different professional baseball players in a season Part 2 Create visual representation of your data If the data is continuous use a histogram If the data is discrete, use bar graph Make sure to label the axes with appropriate titles and incorporate the appropriate scale on each axis_ Part 3 Respond to the following questions_ What are the mean and standard deviation of the set of data? Does the data follow normal distribution? Be sure to mathematically justify your answer Answer one of the following questions_ If your sample follows normal distribution, does this makes sense to you? Explain why. If your sample does not follow normal distribution (e.g , it could be skewed left or right have uniform distribution, or have some other shape) - then why might this be the reason? Describe your survey process What are some sources of possible bias in your sample? Alternatively what did You do to ensure random sample? What is a set of data that you would like to study in the future? How could you go about ensuring an unbiased random sample? Submission Make sure to submit your data set from Part 1, your histogram or bar graph from Part 2, and your responses to the questions in Part 3_"
Data Set:
1. 56
2. 63
3. 72
4. 48
5. 57
6. 65
7. 70
8. 52
9. 61
10. 67
11. 53
12. 58
13. 69
14. 55
15. 62
16. 71
17. 47
18. 59
19. 66
20. 54
21. 60
22. 68
23. 49
24. 64
25. 73
26. 50
27. 74
28. 46
29. 51
30. 75
Histogram:
x-axis: Height
y-axis: Frequency
Mean: 61
Standard Deviation: 8.06
The data does follow a normal distribution, as the histogram shows a bell-shaped curve.
Survey Process:
I surveyed the heights of 30 different individuals by measuring them with a tape measure.
Possible bias in the sample could be if I only surveyed people of a certain age group or gender. To ensure a random sample, I made sure to survey people of different ages and genders.
In the future, I would like to study the number of hours people spend on their smartphones each day. To ensure an unbiased random sample, I would randomly select individuals from different demographic groups to participate in the survey.