Dot plots, Histograms and Shapes of Distributions

Front

What is a dot plot?

Back

A dot plot is a statistical chart that consists of dots representing the frequency of data points. Each dot represents one occurrence of a value.

Front

How do you interpret a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, where the data is divided into bins or intervals, and the height of each bar represents the frequency of data points within that interval.

Front

What does the shape of a distribution tell us?

Back

The shape of a distribution indicates how data points are spread out. Common shapes include normal (bell-shaped), skewed (left or right), and uniform.

Front

What is the mode of a data set?

Back

The mode is the value that appears most frequently in a data set.

Front

How do you find the range of a data set?

Back

The range is found by subtracting the lowest value from the highest value in the data set.

Front

What is a frequency table?

Back

A frequency table is a table that displays the number of occurrences of each value in a data set.

Front

What is the median of a data set?

Back

The median is the middle value when the data set is ordered from least to greatest. If there is an even number of values, the median is the average of the two middle values.

Front

How do you calculate the mean of a data set?

Back

The mean is calculated by adding all the values in the data set and dividing by the number of values.

Front

What is a skewed distribution?

Back

A skewed distribution is one where the data points are not symmetrically distributed, causing one tail to be longer or fatter than the other.

Front

What does it mean for data to be normally distributed?

Back

Data is normally distributed when it follows a bell-shaped curve, with most values clustering around the mean and fewer values at the extremes.