Statistics Basics Quick Check
1. 80 students selected at random during lunch
2.all customers who bought the new coffee
3.No, because he did not choose students randomly.
4.No, because not all people who own a cell phone have the same probability of being selected.
5.Yes, because every student had an equal chance to be part of the sample. The sample size also appears to be large enough.
Those are the answers for you! :)
1. What is statistics?
Statistics is a branch of mathematics that involves collecting, organizing, analyzing, interpreting, and presenting data.
2. What is the difference between descriptive and inferential statistics?
Descriptive statistics involve summarizing and presenting data, while inferential statistics involve making predictions or inferences about a population based on a sample.
3. What are some common measures of central tendency?
The most common measures of central tendency are the mean, median, and mode.
4. What are some common measures of variability?
Common measures of variability include the range, variance, and standard deviation.
5. What is the difference between a parameter and a statistic?
A parameter is a numerical value that describes a population, while a statistic is a numerical value that describes a sample.