True or false, If false state why 1. when entering respondent data into SPSS, ea

Question

True or false, If false state why

1. when entering respondent data into SPSS, each colun contains the data for one respondent

2. missing responses poses problems, particulary if the proportion of missing responses is high

3. the first step in hypothesis testing is to select an appropriate statistical technique and the corresponding test statistic

4. type 1 error occurs when the sample results lead to the rejection of the null hypothesis when it is in fact true

5. if the calculated value of the test statistic is less than the critical value of the test statistic as given in statistical tables the null hypothesis is rejected

6. . Levene test is a test of the null hypothesis that the variances of the two groups are equal

7. correlation score r=1.28 is considered stronger than r=0.6?

8. correlation is a test of association between two or more nominal (categorical ) variables

9. correlation between variables X & Y is the same as between Y& X

10. a value of r=.63 between price and demand means that a change in price causes a change in demand 63% of the time

11. two variables with a correlation of 0.3 have a stronger linear relationship than variables with a correlation of -.0.7

12. the null hypothesis in testing correlation is HO: r=0.

Multiple choice

13. the mean squared deviation of all the values from the mean is the _____

a) standard deviation

b) interquartile range

c) variance

d) coefficient of variation

14) the square root of the variance is the _____

a) interquartile range

b) variance

c) coefficient of vairance

d) standard deviation

15. a statistical technique that describes two or more categorical variables simultaneously and results in tables that reflect percentages and or count frequencies of two or more variables is _______

            a. cross tabulation

            b. parametric test

            c. Non-parametric test

            d. T test

Explanation / Answer

answer

4) true

14) standard deviation

13) variance

15) cross tabulation

3) false: first step is formulate the hypothesis test

6) true

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