This que d the al valu - X Data Table Age, x W. 2 Vocabulary size, y 4 230 570 1100 2100 3 4 5 ܝ ܢܬ ܢܝ ܠ ܩ ܗ ܢ 7 ܘ ܠ ܗ 2
Posted: Wed May 11, 2022 8:07 pm
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The accompanying table shows the ages (in years) of 11 children and the numbers of words in their vocabulary. Complete parts (a) through (d) below. (b) Calculate the sample correlation coefficient r. (Round to three decimal places as needed.) (c) Describe the type of correlation, if any, and interpret the correlation in the context of the data There is linear correlation. Interpret the correlation. Choose the correct answer below. O A. Based on the correlation, there does not appear to be any relationship between children's ages and the number of words in their vocabulary O B. Aging causes the number of words in children's vocabulary to increase. O C. Aging causes the number of words in children's vocabulary to decrease. O D. As age increases, the number of words in children's vocabulary tends to increase. O E As age increases, the number of words in children's vocabulary tends to decrease. OF. Based on the correlation, there does not appear to be a linear relationship between children's ages and the number of words in their vocabulary d) Use the table of critical values for the Pearson correlation coefficient to make a conclusion about the correlation coefficient. Let a = 0.01 The critical value is . Therefore, there sufficient evidence at the 1% level of significance to conclude that V between children's ages and the number of words in their vocabulary