(Solved): Biostatistics questions graph below represents what type of correlation: a. weak positive correlatio ...

graph below represents what type of correlation: a. weak positive correlation c. strong positive correlation e. strong negative correlation b. no correlation present d. weak negative correlation f. a nonlinear relationship 3. Which among the alternatives below, best describes the $x,y$ data in the graph. a. weak positive correlation c. strong positive correlation e. strong negative correlation b. no correlation present d. weak negative correlation f. a nonlinear relationship 5. Decreasing sample size, statistical power in correlation analysis. a. decreases b. does not influence c. measures $\mathrm{f}$. increases 6. Reflecting modern statistical thought, which of the following is the proper way for correlation to be reported in a paper submitted to a peer-review scientific journal. a. $\mathrm{r}=0.55,\mathrm{p}>0.05$ b. $\mathrm{r}<0,\mathrm{p}=\mathrm{NS}$ c. $r=0.55,p=0.072$ d. $p=0.072,r=0.55$ e. none of the above 7. In testing Pearson $\mathrm{r}$ for statistical significance, we use the a. chi-square distribution b. bivariate normal distribution c. Normal distribution d. non-central $\mathrm{F}$ distribution e. $t$-distribution 8. Which of the following is not true, about Pearson correlation? a. it measures causation b. it is a parametric method c. all of the above I 10. In a one-sided correlation test, the p-value $=0.003$ In a two-sided correlation test on the same $x,y$ data, $\mathrm{p}=$ ? a. 0.015 b. 0.03 c. 0.006 d. 0.10 11. When testing Pearson $\mathrm{r}$ for significance, the alternate hypothesis is a. $r$ is small b. $r$ is large c. $\mathrm{r}$-square is $95\%$ d. $r$ is not zero e. $r$-square is $5\%$ f. $r$ is invalid g. $r$ is zero