Statistics

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is a measure of statistical dispersion, representing the range of the middle 50% of a dataset. It is calculated as the difference between the third quartile (Q3) and the first quartile (Q1).

Front

Is the following question statistical or non-statistical? How many siblings does each Longview student have?

Back

Statistical

Front

What is the mode of a dataset?

Back

The mode is the value that appears most frequently in a dataset. For example, in the dataset {49, 55, 85, 73, 73}, the mode is 73.

Front

What is the range of a dataset?

Back

The range is the difference between the highest and lowest values in a dataset. For example, in the dataset {70, 80, 85, 90}, the range is 90 - 70 = 20.

Front

Describe the shape of a symmetrical graph.

Back

A symmetrical graph is one where the left side is a mirror image of the right side. It indicates that the data is evenly distributed around the center.

Front

What is a dataset?

Back

A dataset is a collection of related data points or values, often organized in a table or list for analysis.

Front

What is a quartile?

Back

A quartile is a type of quantile that divides a dataset into four equal parts. The first quartile (Q1) is the median of the lower half, the second quartile (Q2) is the median, and the third quartile (Q3) is the median of the upper half.

Front

What does it mean if data is skewed right?

Back

If data is skewed right, it means that the tail on the right side of the distribution is longer or fatter than the left side, indicating that there are a few high values.

Front

What does it mean if data is skewed left?

Back

If data is skewed left, it means that the tail on the left side of the distribution is longer or fatter than the right side, indicating that there are a few low values.

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).