Non-significant does not mean: - 考试宝

单选题

Non-significant does not mean:

A、

Inconclusive

B、

No strong evidence against H0

C、

Effect is exactly zero

D、

More data may help

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相关试题

单选题 Sampling variability means:

A、

Results never change

B、

Statistics are always biased

C、

Statistics change from sample to sample

D、

Only big samples have variation

单选题 Which tool answers "How big is the effect?"

A、

Hypothesis test

B、

P-value

C、

Confidence interval

D、

Bar chart

单选题 Which best reduces sampling bias?

A、

Convenience sampling

B、

Simple random sampling

C、

Picking the first 100 rows

D、

Asking only volunteers

单选题 Observational studies differ from experiments because they:

A、

Have treatments assigned randomly

B、

Have no data

C、

Always prove cause

D、

Do not assign treatments to subjects

单选题 A statistic refers to:

A、

A number computed from sample data

B、

A value that never changes

C、

A population mean only

D、

A database key

单选题 Why do we sample instead of measuring a whole population?

A、

To avoid uncertainty

B、

Because full populations are often costly or impossible to measure

C、

To guarantee zero error

D、

To make data look normal

单选题 Which tool asks "Is the effect real or just chance?"

A、

Mean plot

B、

Hypothesis test

C、

IQR

D、

Boxplot only

单选题 What is the main goal of statistical inference?

A、

Draw conclusions about a population from a sample

B、

Store data in smaller files

C、

Write faster code

D、

Remove all randomness