Statistics and Probability Flashcards
6 cards from real ALEKS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Statistics and Probability flashcards as text
What is the range of: 15, 22, 8, 31, 19?
Answer: 23
Range = maximum - minimum = 31 - 8 = 23.
A standard die is rolled. What is the probability of rolling a number greater than 4?
Answer: 1/3
Numbers greater than 4 are 5 and 6, so P = 2/6 = 1/3.
In a class of 30 students, 12 prefer math. What percentage prefer math?
Answer: 40%
12/30 × 100% = 40%.
What type of correlation is shown when one variable increases as the other decreases?
Answer: Negative correlation
A negative correlation means one variable increases while the other decreases.
Which display best shows the distribution of a large data set?
Answer: Histogram
A histogram is designed to display the frequency distribution of continuous numerical data.
A card is drawn at random from a standard 52-card deck. What is the probability of drawing a king?
Answer: 1/13
There are 4 kings in 52 cards: P = 4/52 = 1/13.