Which of the following could be a cumulative frequency graph?

Given the following frequency distribution, which class interval contains the median value? Class Intervals: $10-19$ (frequency: $3$), $20-29$ (frequency: $7$), $30-39$ (frequency: $12$), $40-49$ (frequency: $8$), $50-59$ (frequency: $5$).

Given the following frequency distribution of quiz scores: Score: $5$, $6$, $7$, $8$; Frequency: $2$, $4$, $3$, $1$. What is the mean quiz score?

Which of the following is least likely to be used as a criterion when choosing the number of bins ($n$ classes) in a frequency distribution?

Suppose a frequency distribution table shows the following frequencies for four classes: class a: 5, class b: 8, class c: 7, and class d: 10. What is the relative frequency of class d?

Which of the following best describes the use of frequency distributions in time series data analysis?

Given the following data on eye color for a group of $20$ students: $8$ have brown eyes, $6$ have blue eyes, $4$ have green eyes, and $2$ have hazel eyes, which of the following is the correct relative frequency table for eye color?

Which of the following best describes the difference between relative frequency and cumulative frequency in a frequency distribution?

Given a frequency distribution with most data values clustered to the left and a long tail extending to the right, what is the shape of the distribution shown?