Unit 1 Review - Statistics

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly higher or lower than the other values in a data set, which can skew the results.

Front

How do you calculate the Interquartile Range (IQR)?

Back

IQR = Q3 - Q1, where Q3 is the third quartile and Q1 is the first quartile.

Front

What does the range of a data set represent?

Back

The range is the difference between the highest and lowest values in a data set.

Front

How do you find the number of students who liked a specific food from a pie chart?

Back

Multiply the total number of students by the percentage represented by that food in the pie chart.

Front

What is the 1.5 IQR Rule for identifying outliers?

Back

A value is considered an outlier if it is less than Q1 - 1.5*IQR or greater than Q3 + 1.5*IQR.

Front

What is the first quartile (Q1)?

Back

Q1 is the median of the lower half of a data set, representing the 25th percentile.

Front

What is the third quartile (Q3)?

Back

Q3 is the median of the upper half of a data set, representing the 75th percentile.

Front

How do you interpret a box plot?

Back

A box plot displays the distribution of a data set based on a five-number summary: minimum, Q1, median, Q3, and maximum.

Front

What is a pie chart?

Back

A pie chart is a circular statistical graphic divided into slices to illustrate numerical proportions.

Front

What is the Law of Large Numbers?

Back

The Law of Large Numbers states that as a sample size increases, the sample mean will get closer to the expected value.