Star Math data analysis. Practice it free.

The table shows quiz scores and how many students earned each score.
$\begin{array}{c|c} \text{Quiz score} & \text{Number of students} \\ \hline 62 & 2 \\ 68 & 3 \\ 74 & 5 \\ 80 & 3 \\ 86 & 3 \end{array}$

What is the median quiz score?

A line plot shows the lengths of ribbons in inches: 3 ribbons at $\tfrac{1}{8}$ and 1 ribbon at $\tfrac{5}{8}$. What is the total length of ribbon?

A runner logs five lap times, in seconds: $18$, $20$, $22$, $24$, and $26$. A sixth lap time of $16$ seconds is added to the data set. How does this affect the mean?

Seven game scores are $14\textsf{,}$ $18\textsf{,}$ $10\textsf{,}$ $20\textsf{,}$ $12\textsf{,}$ $15\textsf{,}$ and $23\textsf{.}$ What is the mean score?

Find the mean of the data set 3, 8, 10.

The practice times, in minutes, for five days are $35\textsf{,}$ $15\textsf{,}$ $20\textsf{,}$ $40\textsf{,}$ and $25\textsf{.}$ What is the median practice time?

A bar graph shows: Cats = 8, Dogs = 12, Birds = 5. How many more Dogs than Cats?

Four data sets show the number of laps run in five trials. Which set has the least standard deviation?

Set A: $2, 4, 6, 8, 10$
Set B: $5, 5, 6, 6, 8$
Set C: $1, 5, 6, 7, 11$
Set D: $3, 5, 6, 7, 9$