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I need help with these questions:JA: The Tutor can help you
A formal statement that there is an absence of relationship between variables when tested by a researcher is called: Null hypothesis Type I error Type II error Negative interval 1 points Saved QUESTION 2Bivariate statistics refers to the statistical analysis of the relationship between two variables. True False 1 points Save Answer QUESTION 3Positive relationships between two variables indicate that, as the score of one increases, the score of the other increases. True False 1 points Save Answer QUESTION 4A result that is probably not attributable to chance is: Type I error Type II error Statistical significance In the semi-quartile range 1 points Save Answer QUESTION 5A score that is likely to fall into the middle 68% of scores of a normal distribution will fall inside these values: . +/- 3 standard deviations +/- 2 standard deviations +/- 1 standard deviation semi-quartile range 1 points Save Answer QUESTION 6It is important to assess the magnitude or strength of a relationship because this assists you with deciding whether or not a variable A causes variable B. True False 1 points Save Answer QUESTION 7In a negative relationship, as the score of one variable decreases, the score on the second variable decreases. True False 1 points Save Answer QUESTION 8A set of subjects, usually randomly sampled, selected to participate in a research study is called: Population Sample Mode Group Partial Selection 1 points Save Answer QUESTION 9A perfect negative relationship between two variables is expressed as r=0. True False 1 points Save Answer QUESTION 10When examining the relationship between a nominal variable and an interval or ratio variable, you would create a table using the nominal variables, calculate the mode and median of the interval or ratio variable, then make a decision regarding the relationship using the mode and median. True False 1 points Save Answer QUESTION 11A Z score of +/-1.96 is equivalent to these values on a normal distribution. Critical region +/-1 standard deviation +/-2 standard deviations +/-3 standard deviations 1 points Save Answer QUESTION 12An assumption used by statisticians which states that population parameters are normally distributed: Central Limit Theorem Null Hypothesis Statistical significance Standard deviation 1 points Save Answer QUESTION 13When examining the relationship between two interval or ration level variables, you can use a scatterplot to allow you to visualize the relationship between the two. True False 1 points Save Answer QUESTION 14Correlation coefficients, r, range from -1.00 to +1.00. True False 1 points Save Answer QUESTION 15An entire set of individuals or objects having some common characteristics is: Sample Population Median Group Complete selection 1 points Save Answer QUESTION 16Data which uses number values, has an equal distance between values, and has a possible absolute zero is: Interval Nominal Ordinal Ratio 1 points Save Answer QUESTION 17To determine the proportion of variability in one variable that can be accounted for or explained by the variability of a second variable, you would calculate a correlation coefficient, then square it. True False 1 points Save Answer QUESTION 18A significant finding with the 2 sample t-test indicates a strong relationship exists between the 2 population means. True False 1 points Save Answer QUESTION 19Data which uses number values with an equal distance between values are: Nominal Ordinal Normal Interval 1 points Save Answer QUESTION 20Data which uses numbers to provide categories or labels as well as the ordering of the categories are: Nominal Ordinal Ratio Interval 1 points Save Answer QUESTION 21Not all variables retained in a regression model are required to be significant. True False 1 points Save Answ… read more
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