Algebra 1 | Unit 2 | Lesson 2: Writing Equations to Model Relationships (Part 1) | Practice Problems

The dot plot displays the number of marshmallows added to hot cocoa by several kids. What is the MAD of the data represented in the dot plot?

• 0.6 marshmallows

• 3 marshmallows

• 4 marshmallows

• 5 marshmallows

Here is a data set: 5, 10, 10, 10, 15, 100 After studying the data, the researcher realized that the value 100 was meant to be recorded as 15. What happens to the mean and standard deviation of the data set when the 100 is changed to a 15? For the original data set, with the 100, would the median or the mean be a better choice of measure for the center? Explain your reasoning.

In a trivia contest, players form teams and work together to earn as many points as possible for their team. Each team can have between 3 and 5 players. Each player can score up to 10 points in each round of the game. Elena and four of her friends decided to form a team and play a round. Write an expression, an equation, or an inequality for each quantity described here. If you use a variable, specify what it represents.