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Exercise LC. Modied True or False items. If the statement is true, write I; if the statement is false, write E and correct it to make it true. 1. In order for a research study to produce reliable results it is necessary to study each and every element in the population that is being investigated. 2. The primary purpose of statistics is to summarize data, test hypotheses, make prediction and draw inferences. 3. In conducting a research on student academic performance, the raw score that someone receives on a test would be classied as a variable. 4. Two variables have a predictive relationship if a change in one of the variable contributes to or causes a change in the second variable. 5. In a correlational research design, a researcher discovers whether one variable is directly responsible for an observed change in a second variable. 6. Random selection of sample is used to maximize the chances that a selected sample will actually represent the real characteristics of the population. 7.with an ordinal scale of measurement the differences between the scores can be calculated and compared. 8.Most statistical procedures assume that the data conform to an interval or ratio level of measurement. 9.some variables can be measured using more than one level of measurement. _10.An animal researcher counts the number of times a rat presses a bar when different schedules of reinforcement are in place. The number of bar presses is the dependent variable. In this study the dependent variable is a qualitative variable. Flexible Teaching-Learning Modality Remote (asynchronous) . Module, exercises, problem sets, mom; lessons