SP.4 Common Assessment Review

Front

What is the lower quartile in a data set?

Back

The lower quartile (Q1) is the value that separates the lowest 25% of the data from the rest. It is the median of the lower half of the data.

Front

What does a box-and-whisker plot represent?

Back

A box-and-whisker plot visually displays the distribution of a data set, showing the minimum, lower quartile, median, upper quartile, and maximum.

Front

How do you find the median of a data set?

Back

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

Front

What is a line plot?

Back

A line plot is a graph that shows the frequency of data along a number line, with each data point represented by an 'X' or dot.

Front

What is the purpose of the upper quartile in a data set?

Back

The upper quartile (Q3) is the value that separates the highest 25% of the data from the rest. It helps to understand the spread of the upper half of the data.

Front

What is the median math test score if the scores are 70, 85, 90, and 100?

Back

The median is 85, as it is the middle value when the scores are arranged in order.

Front

What does it mean if a data set has a lower quartile of 60?

Back

It means that 25% of the data points are below 60.

Front

How can you identify a set of data that could be represented by a line plot?

Back

Look for a set of data that has repeated values, as line plots show frequency of occurrences.

Front

What is the significance of the median in a data set?

Back

The median provides a measure of central tendency that is not affected by extreme values, giving a better representation of the data's center.

Front

What is the formula to calculate the median for an even number of data points?

Back

Add the two middle numbers and divide by 2.