Understanding Statistics: Measures and Variability

What is a measure of center in statistics?

• A single number describing a data set

• The highest value in a data set

• The difference between the highest and lowest values in a data set

• A graphical representation of data

Tags

CCSS.6.SP.A.3

How do you calculate the mean of a data set?

• Identify the most frequently occurring value

• Subtract the smallest value from the largest value

• Find the middle value of an ordered data set

• Add all data values and divide by the number of values

Tags

CCSS.6.SP.B.5C

What does the median represent in a data set?

• The range of the data

• The most frequently occurring value

• The middle value when the data is ordered

• The average value

Tags

CCSS.6.SP.B.5C

How is the median calculated when there is an even number of data values?

• By averaging the two middle values

• By choosing the lower of the two middle values

• By adding one to the data set and recalculating

• By choosing the higher of the two middle values

Tags

CCSS.6.SP.B.5C

Why is it important to order data when calculating the median?

• To ensure the data is spread out evenly

• To calculate the mean instead of the median

• To identify the mode more easily

• To accurately find the middle value

Tags

CCSS.6.SP.B.5C

What is the mode of a data set?

• The middle value of the data set

• The value that appears most frequently

• The average value of the data set

• The difference between the highest and lowest values

Tags

CCSS.6.SP.B.5C

Can a data set have more than one mode?

• Yes, if multiple values occur with the same highest frequency

• Yes, but only in data sets with an even number of values

• No, because the mode is always the highest value

• No, a data set can only have one mode

Tags

CCSS.6.SP.A.3

What does the range of a data set tell us?

• The most frequently occurring value

• How spread out the data is

• The average value of the data

• The middle value of the data

Tags

CCSS.6.SP.A.3

How is the range calculated?

• By dividing the sum of all values by the number of values

• By finding the difference between the highest and lowest values

• By identifying the value that appears most frequently

• By counting the number of values in the data set

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

What is a measure of variability?

• A single number describing the spread of a data set

• The most frequently occurring value in a data set

• A graphical representation of data

• The middle value of an ordered data set

Tags

CCSS.6.SP.A.3