QNT275-A quantitative variable is the only type of variable that can
1. A quantitative variable is the only type of variable that can:
| A | have no intermediate values |
| B | be used to prepare tables |
| C | assume numeric values for which arithmetic operations make sense |
| D | be graphed |
2. A qualitative variable is the only type of variable that:
| A | cannot be graphed |
| B | cannot be measured numerically |
| C | can assume an uncountable set of values |
| D | can assume numerical values |
3.
The following table gives the cumulative frequency distribution of the commuting time (in minutes) from home to work for a sample of 400 persons selected from a city.
Time (minutes) | f |
0 to less than 10 | 62 |
0 to less than 20 | 147 |
0 to less than 30 | 220 |
0 to less than 40 | 283 |
0 to less than 50 | 355 |
0 to less than 60 | 400 |
The sample size is: _____
The percentage of persons who commute for less than 30 minutes, rounded to two decimal places, is: _____
The cumulative relative frequency of the fourth class, rounded to four decimal places, is: _____
The percentage of persons who commute for 40 or more minutes, rounded to two decimal places, is: _____
The percentage of persons who commute for less than 50 minutes, rounded to two decimal places, is: _____
The number of persons who commute for 20 or more minutes is: _____
4. The temperatures (in degrees Fahrenheit) observed during seven days of summer in Los Angeles are:
78 99 68 91 103 75 85
The range of these temperatures is: _____
The variance of these temperatures, rounded to three decimals, is: _____
The standard deviation, rounded to three decimals, of these temperatures is: _____
-
Rating:
/5
Solution: QNT275-A quantitative variable is the only type of variable that can