bondservant bond'-sur-vant: Appears only once in the King James Version (Leviticus 25:39) where it translates `ebhedh, a slave: Thou shalt not cause him to render the service of a bondservant or slave. the Revised Version (British and American) frequently uses bondservant (doulos) instead of the word servant of the King James Version (John 8:34,35; 1 Corinthians 7:21; Galatians 4:7).
Inferential statistics is different from descriptive statistics in many ways. Even though there are similar calculations, such as those for the mean and standard deviation, the focus is different for inferential statistics. Inferential statistics does start with a sample and then generalizes to a population.
Mean, median, and mode are three kinds of averages. There are many averages in statistics, but these are, I think, the three most common, and are certainly the three you are most likely to encounter in your pre-statistics courses, if the topic comes up at all.