Shape Center Spread

Front

What does it mean for a data distribution to be skewed left?

Back

A left-skewed distribution has a longer tail on the left side, indicating that the majority of the data points are concentrated on the right.

Front

What is the significance of a peak in a data distribution graph?

Back

A peak in a data distribution graph indicates the mode, or the most frequently occurring value in the dataset.

Front

How is the upper quartile (Q3) defined in a dataset?

Back

The upper quartile (Q3) is the value that separates the highest 25% of the data from the lowest 75%.

Front

What is the maximum value in a dataset?

Back

The maximum value is the largest data point in the dataset.

Front

What does it mean for a data distribution to be skewed right?

Back

A right-skewed distribution has a longer tail on the right side, indicating that the majority of the data points are concentrated on the left.

Front

What is the difference between mean, median, and mode?

Back

Mean is the average of all data points, median is the middle value when data is ordered, and mode is the most frequently occurring value.

Front

What is a histogram and how is it used in data analysis?

Back

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

Front

What is the interquartile range (IQR) and why is it important?

Back

The interquartile range (IQR) is the difference between the upper quartile (Q3) and lower quartile (Q1), and it measures the spread of the middle 50% of the data.

Front

How can outliers affect the shape of a data distribution?

Back

Outliers can skew the data distribution, affecting measures of central tendency like mean and median, and can create misleading interpretations.

Front

What is the purpose of box plots in data analysis?

Back

Box plots visually summarize the distribution of a dataset, highlighting the median, quartiles, and potential outliers.