SQA Advanced Higher Statistics Data Analysis and Modelling overview quiz quiz: Statistics (SQA-ADVANCED-HIGHER)

Which study design can establish that one variable causes a change in another?

In experimental design, applying each treatment to several units rather than one is called:

Which divisor gives an unbiased estimate of the population variance from a sample of size $n$ ?

A data set has mean $40$ and median $46$ . What does this suggest about its shape?

A value is flagged as an outlier on a boxplot if it lies beyond:

For events with $P(A) = 0.5$ , $P(B) = 0.4$ , $P(A \cap B) = 0.2$ , what is $P(A \mid B)$ ?

Two events $A$ and $B$ are independent exactly when:

Bayes' theorem is used to:

For a discrete random variable, the variance is calculated as:

If $X \sim B(n, p)$ , its mean and variance are:

A distinctive feature of the Poisson distribution is that:

When approximating a discrete count by a normal distribution, you must:

For independent $X$ and $Y$ , the variance of the difference $X - Y$ is:

The product-moment correlation coefficient is given by:

A residual plot that shows a clear curved pattern indicates that: