Exploring Measures of Central Tendency and Range

What are the three measures of central tendency discussed?

• Mean, Median, Mode

• Range, Median, Mode

• Mean, Median, Variance

• Mean, Mode, Standard Deviation

How is the mean calculated from a list of numbers?

• Identify the most frequent number

• Subtract the smallest from the largest

• Find the middle value

• Add all numbers and divide by the count

What does the range of a dataset tell us?

• The average value

• The middle value

• The spread of the data

• The most frequent number

Which tool can be used to calculate mean and median easily?

• Desmos

• Calculator

• Python

• Excel

What is the median of a dataset?

• The most frequent number

• The middle value when ordered

• The average of all numbers

• The difference between highest and lowest

If a dataset's mode is not distinct, what might it indicate?

• All numbers are the same

• Data is not usable

• There is no variability

• There are multiple common numbers

What does a dot plot represent in data analysis?

• Prediction of future trends

• Frequency of data points

• Calculation of averages

• Correlation between variables

Which salary range has the most number of people according to the dot plot?

• $60,000 to $65,000

• $70,000 to $75,000

• $55,000 to $60,000

• $65,000 to $70,000

What happens to the variation if the highest salary is removed?

• Increases

• Decreases

• Stays the same

• Becomes zero

What is indicated by a dataset being 'skewed right'?

• There are outliers on the high end

• There are outliers on the low end

• Most values are low

• Most values are high