Statistical inference — Question 1

QCAA 2021, Paper 1 · 1 mark

Q1 · 2021 · Technology-freeSimple familiar1 mark

QUESTION 1

Which of the following is a population parameter?

(A)

s

(B)

\mu

(C)

\bar{x}

(D)

z

ABCD

Question linkOriginal paper

WORKED SOLUTION

Answer B

1 mark

ANSWER

Worked solution

\mu

denotes the population mean, so it is a population parameter. By contrast,

s

and

\bar{x}

are sample statistics and

z

is a standardised value.

Selects option B.

[1 mark]

Worked explanation by QCE Vault; correct option verified against the QCAA answer key.

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