Determine what the population, sample, parameter, statistic, variable, and data referred to in the following study.
As part of a study designed to test the safety of automobiles, the National Transportation Safety Board collected and reviewed data about the effects of an automobile crash on test dummies (The Data and Story Library, n.d.). Here is the criterion they used.
| Speed at which Cars Crashed | Location of Driver (i.e., dummies) |
| 35 miles/hour | Front seat |
Cars with dummies in the front seats were crashed into a wall at a speed of 35 miles per hour. We want to know the proportion of dummies in the driver’s seat that would have had head injuries, if they had been actual drivers. We start with a simple random sample of 75 cars.
OpenStax Statistics, 1.1 Definitions of Statistics, Probability, and Key Terms, exercise 4