Statistics and Probability

If the frequencies for three groups are $15, 25,$ and $10$, what is the total frequency?

What is the frequency of 'A' in the list: $A, B, A, C, A, B, A$?

How many tallies are in the representation $||||$ $/$ $||||$ $/$ $||||$ $/$ $||||$ $/$?

In a bar chart, if the bar for 'Rain' is at $15$ and 'Snow' is at $5$, how many fewer days did it snow than rain?

A pictogram has a key: $1$ book $= 20$ pages. If a student read $50$ pages, how many symbols should be drawn?

On a bar chart, the bars are usually separated by gaps. What type of data is usually represented this way?

If a pie chart has a sector of $90^\circ$, another of $90^\circ$, and a third of $100^\circ$, what is the angle of the fourth sector?

If a pie chart is divided into 8 equal parts, what is the angle of each sector?

If a sector is $20^\circ$, how many such sectors would it take to make up exactly $1/3$ of the pie chart?

What is the median of the following list of numbers: $3, 7, 9, 12, 15$?

Find the mean of the numbers: $5, 10, 15, 20$.

Calculate the range of this data set: $12, 5, 20, 15, 8$.

A box has $20$ identical toy cars. If $19$ are red and $1$ is blue, how likely is it that you pick a red car?

What is the probability of choosing a consonant from the word 'BED'?

A fair $6$-sided die is rolled. What is the probability of rolling a number that is NOT a $6$?