Biosstat Q1 FFEP2422

The process of drawing conclusions about a population based on sample data is called:

What does the null hypothesis state?

A researcher wants to test if there is a significant difference in the average income between two cities

The median is the

What can be BEST concluded if the p-value for the slope in a simple linear regression analysis is less than 0.05?

A teacher records the scores of students on a test: {2,3,5,6}. What is the mean score?

Which of the following is NOT a measure of central tendency?

Which of the following BEST describes the purpose of simple linear regression?

Which graphical representation is used to display the distribution of continuous data?

A pharmaceutical company wants to test if a new drug is effective in reducing blood pressure. The null hypothesis?

Which test is appropriate for determining if there is a significant relationship between two continuous variables?

A company records the following sales amounts for five days: (800, 900, 1100, 1200}. What is the range of sales?

If the p-value is less than the significance level (α), what is the decision regarding the null hypotheses?

Which of the following answers is suitable for Fisher's exact test?

A researcher conducts a survey to investigate the relationship between age and income. Statistical method used?

There is a significant difference between the means of two independent groups. Statistical test use is

What is the purpose of inferential statistics?

If the data distribution is negatively skewed, where is the peak of the distribution located?

Which of the following is NOT a requirement for using a t-test?

This scale does not have a ‘true zero point’.  Which of the scales of measurement refers to the above statement?

A researcher wants to determine if there is a significant relationship between hours of study and exam scores.

A researcher wants to compare the effectiveness of two teaching methods on student performance. Statistical method used?

What is the formula to calculate the mean set of data?

What is the purpose of Kruskal Wallis test?

What is Pearson Correlation?

Which of the following measures of dispersion represents the data spread around the mean?

A researcher collects the following data on the heights of students in a class: 62, 66, 64, 60, 68. What is the median?

A researcher wants to determine if there is a significant relationship between hours of study and exam scores.

A company wants to determine if there is a significant difference in the sales performance of its three branches.

When would you use a chi-square test?