Which of the following is a plausible correlation for a person’s height and age from birth to age 10? a. 0.89 b. 0 c. -0.89

Options for each answer are listed

Which r is the strongest correlation? O -0.8 O-0.18 O-0.09 O 0.711 O 0.4

Consider data Y1​,Y2​,…Yn​ that is a random (i.e. independent) sample from a Normal distribution with unknown mean μ and known variance σ2. You wish to infer μ from the data using a Bayesian approach and select a prior on μthat is Normal with mean μ0​ and variance τ2. a. Derive the posterior distribution for μ. Since you should know the final result, credit will only be given for the derivation. b. Write down the posterior mean as a function of the posterior variance. Explain what happens to the posterior mean as a function of increasing n. c. Confirm your answer from part b) by plotting your results in R assuming μ0​=0,τ2=1,σ2=100, and with the data Yˉ=5 for n=1,10,100,1000.

The following histogram shows the exam score for a pre algebra class use this histogram to answer the questions. Find the number of students that took this exam.

How strong is this relationship? Obtain the correlation. (Provide your answer to four decimal places.)  r=

Write a research question that can be explained with a correlation a. Do you have an IV?b. Do you have a DV?

A correlation value of -0.15 is considered a(n) ______ correlation. a. insignificant b. small c. large d. medium

_______________ is the ability to detect a significant difference or relationship and is influenced by several different factors including __________ (name one).