The first six exercises refer to the following study: In a survey of 100 stocks on NASDAQ, the average percent increase for the past year was 9% for NASDAQ stocks. Answer the following:
The “average increase” for all NASDAQ stocks is the:
- Population
- Statistic
- Parameter
- Sample
- Variable
- Parameter
All of the NASDAQ stocks are the:
- Population
- Statistic
- Parameter
- Sample
- Variable
- Population
9% is the:
- Population
- Statistic
- Parameter
- Sample
- Variable
- Statistic
The 100 NASDAQ stocks in the survey are the:
- Population
- Statistic
- Parameter
- Sample
- Variable
- Sample
The percent increase for one stock in the survey is the:
- Population
- Statistic
- Parameter
- Sample
- Variable
- Variable
Would the data collected be qualitative, quantitative – discrete, or quantitative – continuous?
quantitative - continuous
The next two questions refer to the following study: Thirty people spent two weeks around Mardi Gras in New Orleans. Their two-week weight gain is below. (Note: a loss is shown by a negative weight gain.)
| Weight Gain | Frequency |
|---|---|
| -2 | 3 |
| -1 | 5 |
| 0 | 2 |
| 1 | 4 |
| 4 | 13 |
| 6 | 2 |
| 11 | 1 |
Calculate the following values:
- The average weight gain for the two weeks
- The standard deviation
- The first, second, and third quartiles
- 2.27
- 3.04
- -1, 4, 4
Construct a histogram and a boxplot of the data.