3rd QUARTER EXAMINATION REVIEW

1. Which of the following conditions for samples is applicable when conducting an independent t-test?

• 2 dependent samples

• 2 independent samples

• 1 dependent, 1 independent

• 3 or more independent samples

Tags

CCSS.HSS.IC.B.3

5. In the independent t-test result, if the null hypothesis is rejected, therefore ______.

• Variances are equal.

• There is no significant difference in the means of two samples.

• There is a significant difference in the means of two samples.

• Variances are not equal.

In a survey conducted in a small town, the average income of 200 randomly selected households is calculated. What does this average represent?

• Population

• Sample

• Parameter

• Statistic

Tags

CCSS.HSS.IC.B.3

The new medication does not have a significant effect on improving cognitive function in patients with the specified condition. This is an example of _______ hypothesis.

• nullone-tailed

• alternative

• null

• two-tailed

The new fertilizer has no significant effect on the plant’s growth.

• two-tailed test

• one-tailed test

• Type I Error

• Type II Error

A research team surveys a random sample of 1000 smartphones user to make predictions about the preferences of the entire customer base. What type of statistics are they using?

• Statistic

• Descriptive

• Inferential

• Parameter

Tags

CCSS.HSS.IC.B.3

It is a statistical method used to assess whether there are any statistically significant differences before and after the same sample group.

• F-test

• One-Way ANOVA

• Independent T-test

• Dependent T-test

A researcher calculates the average height of all oak trees in a national park. What does this average height represent?

• Statistic

• Parameter

• Descriptive Statistics

• Inferential Statistics

Tags

CCSS.HSS.IC.B.3

The new drug improves patients' sleep quality compared to the existing drug.

• Null Hypothesis

• Two-tailed Test

• Confidence Level

• One-tailed Test