Problem Solving & Data Analysis Flashcards
7 cards from real SAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Problem Solving & Data Analysis flashcards as text
A survey samples 50 students from a school of 1,000. To make valid conclusions about all students, the sample should be:
Answer: Randomly selected
A random sample reduces bias and allows generalization to the whole population.
A spinner has 8 equal sections, 3 of which are red. What is the probability of landing on red?
Answer: 3/8
Probability = favorable ÷ total = 3 ÷ 8.
In a two-way table, 40 of 100 surveyed adults prefer tea. What percent prefer tea?
Answer: 40%
40 out of 100 is 40/100 = 40%.
A box has 5 red and 3 blue marbles. What is the probability of drawing a blue marble?
Answer: 3/8
There are 3 blue out of 8 total marbles, so probability is 3/8.
A study with a small margin of error generally indicates:
Answer: A more precise estimate
A smaller margin of error means the estimate is more precise.
Of 200 people surveyed, 30% own a pet. How many own a pet?
Answer: 60
30% of 200 = 0.30 × 200 = 60.
A coin is flipped twice. What is the probability of getting two heads?
Answer: 1/4
Each flip has probability 1/2, so two heads is 1/2 × 1/2 = 1/4.