Inferences Review

Front

What is an inference?

Back

An inference is a conclusion drawn from evidence and reasoning rather than from explicit statements.

Front

What does IQR stand for in statistics?

Back

IQR stands for Interquartile Range, which measures the middle 50% of a data set.

Front

How do you calculate the median of a data set?

Back

To find the median, arrange the data in numerical order and find the middle value. If there is an even number of values, average the two middle values.

Front

What is the difference between range and IQR?

Back

Range is the difference between the highest and lowest values in a data set, while IQR measures the spread of the middle 50% of the data.

Front

What does it mean if a data set has high variability?

Back

High variability means that the data points are spread out over a wider range of values.

Front

What is a dot plot?

Back

A dot plot is a simple way to display data using dots to represent individual data points.

Front

What is a biased sample?

Back

A biased sample is one that does not accurately represent the population from which it is drawn.

Front

What is an unbiased sample?

Back

An unbiased sample is one that fairly represents the population, allowing for accurate conclusions.

Front

How do you find the mean of a data set?

Back

To find the mean, add all the values together and divide by the number of values.

Front

What is the significance of the median in data analysis?

Back

The median provides a measure of central tendency that is not affected by extreme values.