Statistics Concepts

Inferential vs descriptive statistics??

• Descriptive

• Inferential

Statistics comes from the Latin word “statisticus”, which means?

• the study of people, supplies, and the like in a state

• the study of earth and its continents

• the study of shapes and environment

It is the entire collection of observations such as person or object included in the study.

• Sample

• Individual

• Population

The data that gives numerical information.

• Qualitative Data

• Quantitative Data

• Parameter

What is the level of measurement of TOP 3 STUDENTS IN A CLASS?

• Nominal

• Ordinal

• Interval

• Ratio

What is the mean of the following numbers: 2, 4, 6, 8, 10?

• 8

• 10

• 6

• 4

Define the term 'median' in statistics.

• The median is the average of a data set.

• The median is the highest value in a data set.

• The median is the middle value of a data set.

• The median is the sum of all values in a data set divided by the number of values.

What is a standard deviation and why is it important?

• Standard deviation is a measure of the dispersion of a set of values, indicating how much they deviate from the mean.

• Standard deviation is the average of a set of values.

• Standard deviation is a method for calculating the median of a dataset.

• Standard deviation measures the total number of values in a dataset.

How can outliers affect the mean of a data set?

• Outliers have no effect on the mean.

• Outliers always increase the mean value.

• Outliers can distort the mean, making it unrepresentative of the data set.

• Outliers only affect the median, not the mean.

Define the term 'variance' in the context of statistics.

• Variance measures the central tendency of data.

• Variance is a statistical measure that represents the degree of variation or dispersion of a set of values.

• Variance is the average of a set of values.

• Variance is a method for calculating probabilities.