BIVARIATE DATA

What do you call a set of data that involves 2 variables?

• Univariate

• Trivariate

• Bivariate

• Multivariate

Which of the following situations involve bivariate type of data?

• Joan recorded the daily allowance of her 50 classmates.

• Kassandra recorded how long 25 people exercised.

• Zoe estimated that 17 out of 50 students have internet access.

• Cedrick compared employees' overtime hours and their spending power.

In a Zumba class, an instructor recorded the number of minutes spent by the 15 participants and the number of calories they burned within the month. What are the variables presented in the situation above?

• number of minutes spent and the burned calories.

• number of sessions attended and the burned calories

• burned calories and number of days spent in the session

• number of minutes spent and number of days present during the class

A health enthusiast finds out that the volume of water intake of an individual has an inverse effect on the accumulation of fats in his body. Does the situation presented involve bivariate data?

• No, because there are four variables involved.

• Yes, because there are two variables involved.

• No, because there are three variables involved.

• No, because there is only one variable involved.

Determine the variables involved in the situation below: “Asta’s goal for the summer vacation is to have a healthy and fit body. He recorded the number of minutes he spends daily in doing abdominal exercises and his weight for 30 days. He found out that the longer he does abdominal exercise, the more weight he loses.”

• Asta’s weight

• Number of days spent and weight

• Number of minutes doing abdominal exercise

• Number of minutes doing abdominal exercise and weight loss

Which of the following interpretation best describes a positive correlation scatter plot?

• As x values increase, y values increase.

• As x values increase, y values decrease.

• As x values increase, y values remain the same.

• As x values decrease, y values increase.

According to a study, the height of an individual is more likely inherited from his/her father. If data on the height of individuals and their fathers are collected to construct a scatter plot, which of the variables will assume the plot as y-coordinate?

• height of the father

• height of the individual

• height of the mother

• cannot be determined

The form of the points in a scatter plot suggests the ______ of the correlation of the variables whether the bond of data set is strong or weak.

• Direction

• Strength

• Shape

• Variation

From an experiment conducted by a group of researchers, they found out that those students who perform well in English may not perform well in Mathematics based on the results of their test scores. What are the variables involved in the study?

• tests in Mathematics and English

• scores in Mathematics and English tests

• scores in the test and the test questions

• test questions in Mathematics and English

An ornithologist, a person who studies every aspect of birds, found out that the scatterplot of the correlation between wing length and tail length of 12 different species of bird is scattered and without pattern. Which conclusion can be drawn from the result?

• A bird with longer wing length has shorter tail length.

• A bird with shorter wing length has longer tail length.

• A bird with longer wing length also has longer tail length.

• There is no correlation between bird’s wing length and tail length.