ATLAS Algebra I Statistics and Probability. Practice it free.

Four data sets show daily high temperatures (in °F). Which set has the greatest standard deviation?

Set A: $20, 22, 24, 26$
Set B: $21, 23, 25, 27, 29$
Set C: $10, 22, 24, 26, 28$
Set D: $22, 23, 24, 25, 26$

Seven morning temperatures, in degrees Fahrenheit, are $62\textsf{,}$ $64\textsf{,}$ $66\textsf{,}$ $75\textsf{,}$ $70\textsf{,}$ $72\textsf{,}$ and $67\textsf{.}$ Which data set has the same mean?

Seven test scores are $90\textsf{,}$ $50\textsf{,}$ $80\textsf{,}$ $55\textsf{,}$ $72\textsf{,}$ $60\textsf{,}$ and $83\textsf{.}$ Which data set has the same median?

From a table, 6 are defective AND from line A and 15 total are items from line A. Find the conditional probability of defective given line A (simplified fraction).

A musician practiced piano for $40$, $55$, and $50$ minutes on three days. On a fourth day, the practice time was $x$ minutes. The mean practice time over the four days is $48$ minutes. What is the value of $x$?

A dot plot of the number of siblings shows 2 dots above 0, 6 dots above 1, 3 dots above 2, and 1 dot above 3. Which number of siblings occurs most often?

A normal distribution has mean $200$ and standard deviation $20$. What value is 1 standard deviation below the mean?

An online store's weekly visitors are modeled by $v(w)=1{,}250(1.08)^w$, where $w$ is the number of weeks after a launch campaign begins. According to the model, how many visitors does the store have $2$ weeks after the campaign begins?