Assignment 1 Answer

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BUQU 1230
Assignment #1

Solve the following 3 problems:

1- Consider the data set for the sample of 10 minisystems that is posted on the course web site. Open the Excel “Minisystems” file and answer the following questions: a. What are the elements in this study? How many elements are in the data set?
Brand & Model b. How many variables are in the data set?
5 Variables (Price, Sound Quality, CD Capacity, FM Tuning, and Tape Decks) c. Which of the variables are quantitative and which are categorical?
Categorical: Sound Quality, FM Tuning, and Tape Decks
Quantitative: Price and CD Capacity d. What is the average CD capacity for the sample?
3
e. What percentage of the minisystems provides an FM tuning rating of very good or excellent?
40% + 30% = 70% f. What percentage of the minisystems includes two tape decks?
40%
g. Report the average price of minisystems for different classes of Sound Quality.
|Fair |170 |
|Good |314 |
|Very Good |350 |

2- Suppose that there are 30 students in a classroom and that they have a grade point average listed in the following table. Construct a frequency distribution table that summarizes the data into 6 classes. Calculate relative frequency and percent frequency for each class and use a graphing technique to chart your data. What type of chart would you use to present the frequency and percent frequency for this data?

Student GPAs: 1.2 3.9 1.9 3.8 2.4 2.7 2.3 2.3 2.6 0.7 3.1 3.7 3.6 2.9 4.0 2.2 2.7 1.2 1.9 0.8 1.8 2.1 0.3 2.4 3.1 3.2 3.2 0.8 3.1 3.6

|GPA |Frequency |Relative |Percent |
| | |Freq. |Freq. |
|0-0.69 |1 |0.03

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