Statistical Analysis Quiz

What are the two measures of center in statistical analysis?

• Minimum and maximum

• Mean and median

• Range and mode

• Mean and mode

How is the median of a dataset calculated?

• By adding up all the values in the dataset

• By dividing the range by the number of values

• By taking the average of the two middle values when there is an even number of values

• By locating the largest number in the dataset

What does the term "spread" in statistical analysis refer to?

• The number of values in the dataset

• The minimum and maximum values in the dataset

• The sum of all values in the dataset

• The values in the middle fifty percent of the dataset

In a box and whiskers plot, what does the left whisker represent?

• The range of values in the dataset

• The maximum value in the dataset

• The minimum value in the dataset

• The median value

Why do data scientists use special tools like spreadsheets and visualization software?

• To make data more confusing and harder to understand

• To organize large quantities of data and make it more understandable

• To create complicated mathematical models

• To predict the future with certainty

What is the role of a data scientist?

• To design skimmers for students

• To calculate the mean and median of a dataset

• To organize and analyze data, turning it into a clear and understandable "data story"

• To make data more confusing

What information is typically included in the five-number summary of a dataset?

• Minimum, maximum, and the mean

• The range and the mode

• Minimum, maximum, and the values in the middle fifty percent

• The median and the mode

What does a box and whiskers plot visually represent?

• The entire population

• The range and mode of data

• The center and spread of a dataset

• The sum of all data points

How can center and spread help interpret the meaning of a dataset?

• They don't provide any useful information about the data

• They help to identify the highest and lowest values in the dataset

• They give insights into where the midpoint of the data lies and how varied the values are

• They tell you how to design a box and whiskers plot

What does the center of a dataset indicate?

• The maximum value

• The median value

• The range of values

• The minimum value