If two variables are highly correlated, what do you know

Related MCQs

• When two variables are correlated we can say
• You have a correlation coefficient of 0.45 between two variables. How much variance would these two variables (to the nearest whole number) share, in percentage terms
• Considering the various types of tables and charts you have studied, which table, chart, diagram or plot would you use to depict categorical data for two variables in a visual format
• You are conducting a study to see whether a new experimental medication will cause bald men to grow hair. You divide your patients into 2 groups. To one group you give the medication. To the other group, you give a placebo. In this study, the correct terms for the taking of the medication and the growth of hair are the following.
• The rule of thumb for creating a frequency distribution is to divide the data into 5-15 classes. While larger numbers of classes allow for larger data sets, how do you know exactly how many classes to use
• The _________coefficient (r) is a ratio between the covariance (variance shared by two variables) and a measure of the separate variances.
• If there is a very strong correlation between two variables then the correlation coefficient must be
• You are conducting a survey of the people of India to find out how popular football is among the Indians. You randomly choose people to call, and make 1,000 phone calls to people scattered across the country. In this study, what of the following statement is true
• Statistics is the study of _______ measures of the values associated with variables
• __________ variable is a factor that is not itself under study but affects the measurement of the study variables or the examination of their relationships.