University:
McNeese State University
Course:
MATH 231 | Elementary Probability and Statistical Inference
Academic year:

2024
Views:

186

Pages:

1
Author:

Tori K.

Math 231 1-1 An Overview of Statistics Baldwin Ex 2: Decide whether each number describes a population parameter or a sample statistic. 1. A survey of several hundred collegiate student-athletes in the United States found that, during the season of their sport, the average time spent on athletics by student-athletes is 50 hours per week. (Source: Penn Schoen Berland) the a of average of subset 30 the hours per population , week so based is it is a on sample - Statistic - 2. The freshman class at a university has an average SAT math score of 514. of Math score SAT The average entire freshman class , so it is a 514 is based on the population parameter - 3. In a random check of several hundred retail stores, the Food and Drug Administration found that 34% of the stores were not storing fish at the proper temperature. the 34 % is based sample of on a stores not subset statistic of storing the fish a population the , so proper temp. it is a . - The study of statistics has two major branches: • Descriptive statistics is the branch of statistics that involves the organization, summarization, and display of data. Ex: Tables, charts, averages • Inferential statistics is the branch of statistics that involves using a sample data to draw conclusions about a population. A basic tool in the study of inferential statistics is probability. 2