7.1 Displaying Data - Lesson Check

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, showing the frequency of data points within specified ranges (bins).

Front

How do you determine the total number of students represented in a histogram?

Back

To determine the total number of students, sum the heights of all the bars in the histogram, which represent the frequency of students in each interval.

Front

What does the median represent in a data set?

Back

The median is the middle value of a data set when it is ordered from least to greatest, dividing the data into two equal halves.

Front

What is the range of a data set?

Back

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

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set, representing the middle 50% of the data.

Front

What does it mean if a histogram is skewed right?

Back

A histogram is skewed right if the tail on the right side is longer or fatter than the left side, indicating that there are a few high values.

Front

What does it mean if a histogram is skewed left?

Back

A histogram is skewed left if the tail on the left side is longer or fatter than the right side, indicating that there are a few low values.

Front

What is a uniform distribution in a histogram?

Back

A uniform distribution in a histogram occurs when all intervals have approximately the same frequency, resulting in a flat shape.

Front

How can you identify the interval with the fewest scores in a histogram?

Back

To identify the interval with the fewest scores, compare the heights of the bars representing each interval and find the lowest one.

Front

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

Back

The mode is the value that appears most frequently in a data set, indicating the most common observation.