Ivo Dinov UCLA Statistics, Neurology, LONI, Math/PIC |
|
STAT 35 Winter 2005 |
Interactive and Computational Probability |
Department
of Statistics |
Instructor: Ivo Dinov |
Homework 1 |
Due Date:
Wednesday, Jan. 26, 2005 |
Class interval for the clearness index |
Number of days |
Relative Frequency |
Cumulative Relative Frequency | Model Probabilities (model used) ___________ |
0.16 - 0.20 |
3 |
|||
0.21 - 0.25 |
5 |
|||
0.26 - 0.30 |
6 |
|||
0.31 - 0.35 |
8 |
|||
0.36 - 0.40 |
12 |
|||
0.41 - 0.45 |
16 |
|||
0.46 - 0.50 |
24 |
|||
0.51 - 0.55 |
39 |
|||
0.56 - 0.60 |
51 |
|||
0.61 - 0.65 |
106 |
|||
0.66 - 0.70 |
84 |
|||
0.71 - 0.75 |
11 |
389 |
356 |
359 |
363 |
375 |
424 |
325 |
394 |
402 |
373 |
373 |
370 |
364 |
366 |
364 |
325 |
339 |
393 |
392 |
369 |
374 |
359 |
356 |
403 |
334 |
397 |
- How different are the sample mean and median?
- By how much should the largest time be increased so that the sample median is half the sample mean?
14.5 | 25.6 | 52.4 | 66.3 | 69.3 | 69.8 | 76.2 |
- What is the five-number summary for this data?
- Calculate the following sample measures of spread: variance, standard deviation and the mean-absolute-deviation.
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