Question

FInd the precision of acertain study if asample of 200 cars is used over a population of 15,300 cars?

Answer 1

Answer:

In short, a measurement (or in our case, the estimate from a survey) is precise if it obtains similar results with repeated measurement (or repeated surveys).

A measurement is accurate if it is close to the truth with repeated measurement (or repeated surveys).

Last's Dictionary of Epidemiology says it best:

A faulty measurement may be expressed precisely but may not be accurate. Measurements should be both accurate and precise, but the two terms are not synonymous.

Step-by-step explanation:

Hopoe this helps.

Answer 2

Given,

Total number of cars used tested in a survey = 15,300

Number of cars that qualified the survey and are used = 200

To find,

The precision of the study.

Solution,

We can simply solve this mathematical problem using the following process:

Mathematically,

the precision of a study

the precision of a study = (total number of entries qualified) / (total number of entries taking part in the survey)

Now, according to the question;

the precision of the given study

= (total number of entries qualified) / (total number if entries taking part in the survey)

= (total number of cars that qualified the survey and are used) / (total number of cars used tested in the survey)

= 200/15300

= 0.013

Hence, the precision of the given study is equal to 0.013.