Friday, August 17, 2007

The linear labs

Find the least-squares regression line through the data you collected in class today. Describe trends in your data, the direction, linearity, strength of the relationship, and presence of outliers. Present a comment about the nature of the connection between the x and y values from your lab.

First period:

These may not be your actual data. . . the postits got a little mixed up. Anyway, you can use these for your HW.


Other classes:
If you lost your data, post a message asking for your particular set of data. NO LAST NAMES PLEASE!!!!


Arm/foot
12, 10.5
11, 10
11, 9.5
11, 10
11.5, 10
11, 10
11, 10
11.5, 10.25
12, 10.5
11.5, 10
12, 11.5
11.5, 10
11, 9
10, 8.5
9.5, 9.25
11, 9
8.5, 9
8.5, 9


Days
15, 16
1, 30
3, 28
9, 21
8, 22
12, 18
11, 17
14, 17
15, 16
17, 14
19, 12
7, 23
26, 5
24, 7
25, 6
24, 6
30, 1
30, 1

Ball toss
5, 6
3, 3
3, 3
2, 4
1, 2
2, 1
1, 0
0, 0

3 comments:

derek d said...

The directions said leave a comment so i will.. The x and y values for the "ball shooting" dont show a very strong pattern, but for the most part, if one increased so did the other, giving the line a posative slope.

MrFantasian said...

If anyone is out there, can someone explian to me what is means by the "Relationship of X and Y"?

MrFantasian said...

Oh well, I think I got it now.

The "Birthday" data on a least regression line shows a negative slope. When X, the day of birth increases, then y, the number of days after the date of birth withtin the month,decreases. I can only see one outlier.

David T.- 5th Period

P.S.
I sounded illiterate in my last post.