STATISTICS AND PROBABILITY (4th Quarter Period)

It is the statistical method used in making decisions using experimental data.

• observation

• simple analysis

• analytical testing

• hypothesis testing

What kind of parameter is applied in the given situation? “The mean height of all Grade 11 students is 170 cm.”

• Mean

• variance

• proportion

• standard deviation

Which of the following symbols is used for population variance?

• Σ

• 𝜎²

• 𝜎

• μ

Which of the following describes a null hypothesis using two-tailed test?

• 𝐻₀: 𝜇=𝜇₀

• 𝐻₀: 𝜇≠𝜇₀

• 𝐻₀: 𝜇≥𝜇₀

• 𝐻₀: 𝜇≤𝜇₀

What term is being used to describe a proposed explanation, assertion, or assumption about a population parameter or about the distribution of a random variable?

• statistic

• decision

• hypothesis

• probability

The sign of the alternative hypothesis in a left-tailed test is always_________.

• equal

• less than

• not equal

• greater than

The numerical measure that describes the certain characteristics of a population is called ____.

• sample

• statistics

• parameter

• population

What kind of hypothesis is illustrated below?

The mean score of all Grade 11 students is higher than 75.

• one-tailed test

• two-tailed test

• null hypothesis

• alternative hypothesis

“A modern approach in the advertisement will not increase the demand for a product.” This is an example of _______________ hypothesis.

• Null

• Mean

• alternative

• right-tailed

What appropriate tool is applicable if the population is normal, sample standard deviation is known, and sample is less than 30?

• t-test

• z-test

• normal test

• Central Limit Theorem