Algebra 1 Probability and Statistics Challenge

This video tutorial provides a refresher on probability and statistics, covering basic probability concepts, simple and compound probability calculations, and measures of central tendency such as mean, median, and mode. It also explains how to create and interpret box and whisker plots, highlighting data dispersion and quartiles.

What is the probability of drawing a purple marble from a bag containing 4 red, 8 purple, and 6 blue marbles?

• 2/9

• 6/18

• 8/18

• 4/18

If a bag contains 4 red, 8 purple, and 6 blue marbles, what is the probability of drawing a red marble?

• 6/18

• 2/9

• 8/18

• 4/18

In compound probability, what operation is used when the word 'and' is involved?

• Subtraction

• Addition

• Division

• Multiplication

What is the probability of drawing a purple marble followed by a red marble without replacement from a bag containing 4 red, 8 purple, and 6 blue marbles?

• 2/9

• 4/17

• 8/18

• 16/153

Which measure of central tendency is defined as the average of a data set?

• Median

• Mode

• Range

• Mean

How do you find the median of a data set?

• Add all values and divide by the number of values

• Find the most frequently occurring value

• Subtract the smallest value from the largest value

• Arrange the values in order and find the middle value

If your grades on three exams are 80, 93, and 91, what grade do you need on the next exam to have an average of 90?

• 96

• 95

• 90

• 85

What is the first step in creating a box and whisker plot?

• Identify the minimum and maximum values

• Find the median

• Draw a number line

• Calculate the interquartile range

In a box and whisker plot, what does the box represent?

• The range of the data

• The interquartile range

• The mean of the data

• The mode of the data

What does the interquartile range (IQR) measure in a data set?

• The difference between the maximum and minimum values

• The most frequently occurring value

• The average of the data set

• The spread of the middle 50% of the data