HSS-ID.A.2 Review

Front

What is a box-and-whisker plot?

Back

A box-and-whisker plot is a graphical representation of a dataset that displays the minimum, first quartile, median, third quartile, and maximum values.

Front

How do you find the median of a dataset?

Back

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

Front

What does it mean if a boxplot is right skewed?

Back

A right skewed boxplot indicates that the majority of the data points are concentrated on the left side, with a longer tail extending to the right.

Front

What is the formula for calculating the mean?

Back

The mean is calculated by adding all the values in a dataset and dividing by the number of values.

Front

What is a normal distribution?

Back

A normal distribution is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Front

What percentage of data falls within one standard deviation of the mean in a normal distribution?

Back

Approximately 68% of the data falls within one standard deviation of the mean in a normal distribution.

Front

What is the first quartile (Q1) in a dataset?

Back

The first quartile (Q1) is the median of the lower half of the dataset, representing the 25th percentile.

Front

What is the third quartile (Q3) in a dataset?

Back

The third quartile (Q3) is the median of the upper half of the dataset, representing the 75th percentile.

Front

How do you interpret the interquartile range (IQR)?

Back

The interquartile range (IQR) is the difference between the third quartile (Q3) and the first quartile (Q1) and measures the spread of the middle 50% of the data.

Front

What is the significance of outliers in a dataset?

Back

Outliers are data points that differ significantly from other observations and can affect the mean and standard deviation, indicating variability in the data.