Georgia Milestones Algebra II Statistics and Probability. Practice it free.

Four data sets record the number of pages read in four or five sessions. Which set has the least standard deviation?

Set A: $4, 8, 12, 16$
Set B: $6, 8, 10, 12, 14$
Set C: $7, 8, 9, 10, 11$
Set D: $2, 6, 10, 14, 18$

The ages, in years, of seven students are $10\textsf{,}$ $16\textsf{,}$ $14\textsf{,}$ $8\textsf{,}$ $13\textsf{,}$ $15\textsf{,}$ and $8\textsf{.}$ Which data set has the same mean?

Seven game scores are $90\textsf{,}$ $70\textsf{,}$ $82\textsf{,}$ $75\textsf{,}$ $95\textsf{,}$ $60\textsf{,}$ and $88\textsf{.}$ Which data set has the same median?

At trivia night, a team answered $6$, $8$, $7$, and $9$ questions correctly in the first four rounds. In the fifth round, the team answered $x$ questions correctly. The mean number of correct answers per round is $8$. What is the value of $x$?

A histogram has bins 0-9: 4 values, 10-19: 7 values, 20-29: 5 values. How many data values are there in all?

A normal distribution has mean $100$ and standard deviation $15$. What value is 1 standard deviation above the mean?

Find the median of $3, 7, 9$.

A PE class uses a spinner with $3$ equal sections to assign stations: Strength, Cardio, and Flexibility. After $300$ spins, the results were:

| Station | Spins |
| :-- | --: |
| Strength | $145$ |
| Cardio | $88$ |
| Flexibility | $67$ |

Which change would most likely make the spinner fair?