SAT Math: Problem Solving and Data Analysis
Which of the following best describes selection bias?
A researcher wants to survey students about their opinions on a new school policy. To ensure representation from each grade level, the researcher divides the student population into grade levels and then randomly selects students from each ...
Which type of chart is most suitable for comparing the sales of different product categories in a single year?
A researcher is conducting a survey on political opinions but only collects responses from individuals attending a political rally for a specific candidate. What type of bias is most likely to affect the results of this survey?
A researcher designs an experiment to test the effect of a new exercise program on weight loss. Participants are allowed to choose whether they want to be in the exercise group or the control group. What is the most significant weakness of ...
A study claims that drinking a specific herbal tea significantly reduces anxiety, based on data collected from participants who volunteered to participate after seeing an advertisement for the tea. The study was funded by the tea company. W...
A study aims to determine the effect of a new teaching method on student test scores. However, students in the experimental group also have access to additional tutoring, while those in the control group do not. How might biases interact in...
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Which of the following actions can help minimize measurement errors during data collection?
Which sampling technique gives every member of the population an equal chance of being selected?
In an experiment studying the effect of a new drug on reaction time, what is the independent variable?