Introductory Statistics (10th Edition)
10th Edition
ISBN: 9780321989178
Author: Neil A. Weiss
Publisher: PEARSON
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Textbook Question
Chapter 2.3, Problem 65E
In Exercises 2.60–2.71, we have presented some quantitative data sets and specified a grouping method for practicing the concepts. For each data set,
- a. determine a frequency distribution.
- b. obtain a relative-frequency distribution.
- c. construct a frequency histogram based on your result from part (a).
- d. construct a relative-frequency histogram based on your result from part (b).
2.65 Use limit grouping with a first class of 0–4 and a class width of 5.
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I. Complete the frequency distribution below.
Grades
95-99
90-94
85-89
80-84
75-79
II. Complete the data below.
COMPUT
Q3²
D₂
Grades of G10- NEPTUNE in Filipino
frequency
Class
boundaries
10
16
10
Less than
cumulative
frequency
INTERPRETATION
Construct a frequency distribution and a relative frequency histogram for the accompanying data set using five classes. Which class has the greatest relative
frequency and which has the least relative frequency?
Click the icon to view the data set.
.....
Complete the table below. Use the minimum data entry as the lower limit of the first class.
Class
138 -202
203 -267
268 -332
Frequency, f Relative frequency
0.539
0.154
0.154
14
4
333 -397
1
3
Ei= 26
0.039
398 - 462
0.115
(Type integers or decimals. Round the class limits to the nearest whole number. Round all other values to the nearest thousandth as needed.)
Data Set
Triglyceride levels of 26 patients (in milligrams per
deciliter of blood)
138
202 238 143 295
175 238 215 223
180
138 272 161
175 398 168
459 146
397
151
202 295
189 320
421
161
Enter your answer in the e
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As part of an effort to reduce patient costs, a hospital analyzes the number of visits by a nurse for 13 patients over a ten-day period. The average number of nurse visits per day for these patients is given below. Construct a frequency table with 4 classes for these values, using the minimum value in the dataset as the lowest class limit in your calculations.
3.6,3.7,4.0,4.2,4.3,4.6,5.1,5.2,5.5,6.7,7.2,8.7,13.0
Chapter 2 Solutions
Introductory Statistics (10th Edition)
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