OpenUp 6th Math 8.10 Practice Problems and Vocab

A ___ ___ ____ is a value that seems typical for a data distribution. Mean and median are both examples of this. (3 words)

On school days, Kiran walks to school. Here are the lengths of time, in minutes, for Kiran’s walks on 5 school days. Create a dot plot for Kiran’s data.

On school days, Kiran walks to school. Here are the lengths of time, in minutes, for Kiran’s walks on 5 school days. Without calculating, decide if 15 minutes would be a good estimate of the mean. If you think it is a good estimate, explain your reasoning. If not, give a better estimate and explain your reasoning.

On school days, Kiran walks to school. Here are the lengths of time, in minutes, for Kiran’s walks on 5 school days. Calculate the mean for Kiran’s data.

• 14

• 13

• 70

• 350

On school days, Kiran walks to school. Here are the lengths of time, in minutes, for Kiran’s walks on 5 school days. In the table, record the distance of each data point from the mean and its location relative to the mean.

On school days, Kiran walks to school. Here are the lengths of time, in minutes, for Kiran’s walks on 5 school days. Calculate the sum of all distances to the left of the mean, then calculate the sum of distances to the right of the mean. Explain how these sums show that the mean is a balance point for the values in the data set.

Noah scored 20 points in a game. Mai's score was 30 points. The mean score for Noah, Mai, and Clare was 40 points. What was Clare's score? Explain or show your reasoning.