Problem-Solving and Data Analysis · Matemáticas
Evaluating statistical claims: Observational studies and experiments en el SAT
This skill asks what a study's design lets you conclude, chiefly whether it was an observational study or a randomized experiment.
- Sección
- Matemáticas del SAT
- Dominio de contenido
- Problem-Solving and Data Analysis
- Peso en la sección
- 15%
- Preguntas que cuentan
- Unas 6 por examen
De las preguntas que cuentan en esa sección
De 40 preguntas que cuentan en la sección
Cómo son las preguntas
A study described in a few lines, then four conclusions. The question asks which conclusion the design supports.
El error que cuesta puntos
Reading a cause into an observational study. Only random assignment to treatment supports a causal conclusion, and questions pair the two designs to test that.
Cómo resolverlas
Check two things: was treatment randomly assigned, and was the sample randomly selected. Random assignment supports a cause, random selection supports generalizing, and whichever is missing blocks that conclusion.
Practica Evaluating statistical claims: Observational studies and experiments ahora
Diez preguntas sobre esta destreza, sin cronómetro y con la explicación después de cada respuesta. No hace falta cuenta; si inicias sesión, la misma práctica también alimenta la precisión por destreza que lee tu plan de estudio.
Preguntas sobre Evaluating statistical claims: Observational studies and experiments
- What is the difference between random assignment and random selection?
- Random assignment decides who receives the treatment inside the study. Random selection decides who is invited into the study from the population. The first supports cause and effect, the second supports generalizing.
- How large does a sample need to be?
- The SAT does not test a size threshold. Questions compare designs, so a large unrepresentative sample is still a weak basis for a population claim, while a smaller random one is defensible.
- How many Evaluating statistical claims: Observational studies and experiments questions are on the SAT?
- College Board does not publish a count per question type, only per content domain. Problem-Solving and Data Analysis makes up about 15 percent of the Math section, which is roughly 6 of the 40 scored Math questions on a full form. Questions on this skill come out of that share.
Más destrezas de Problem-Solving and Data Analysis
- Ratios, rates, proportional relationships, and unitsThis skill is proportional reasoning and unit conversion: building a ratio from a description and converting between units without losing track of them.
- PercentagesPercentages asks for percent change, a percent of a quantity, or the original value after a change.
- One-variable data: Distributions and measures of center and spreadOne-variable data asks you to read a distribution: mean, median, range, standard deviation, and how one added value shifts each of them.
- Two-variable data: Models and scatterplotsTwo-variable data asks you to read a line of best fit: what its slope means, how a prediction uses it, and how far the points sit from it.