Problem 1
The following data give the weekly amounts spent on groceries for a sample of households.
$271
|
$363
|
$159
|
$ 76
|
$227
|
$337
|
$295
|
$319
|
$250
|
279
|
205
|
279
|
266
|
199
|
177
|
162
|
232
|
303
|
192
|
181
|
321
|
309
|
246
|
278
|
50
|
41
|
335
|
116
|
100
|
151
|
240
|
474
|
297
|
170
|
188
|
320
|
429
|
294
|
570
|
342
|
279
|
235
|
434
|
123
|
325
|
a. Create a frequency table of 9 classes
b. find andInterpretthe mean and median of the distribution
c. find andinterpretthe variance and standard deviation -----------------------------------------
Problem 2
The monthly issues of theJournal of Financeare available on the Internet. The table below shows the number of times an issue was downloaded over the last 33 months. Suppose you wish to summarize the number of downloads with a frequency distribution.
312
|
2,753
|
2,595
|
6,057
|
7,624
|
6,624
|
6,362
|
6,575
|
7,760
|
7,085
|
7,272
|
5,967
|
5,256
|
6,160
|
6,238
|
6,709
|
7,193
|
5,631
|
6,490
|
6,682
|
7,829
|
7,091
|
6,871
|
6,230
|
7,253
|
5,507
|
5,676
|
6,974
|
6,915
|
4,999
|
5,689
|
6,143
|
7,086
|
a. Find the mean, median, mode, minimum and maximum values as well as variance, standard deviation, range,
b. find Q1,Q2,Q3 and if there are any outliers
c. Find andinterpret the 35th percentile and the 90th percentile of the data