The Data on the Distance Walked Per Week by 20

question 64

Essay

The data on the distance walked per week by 20 people of different age groups are given in the table below. $$\begin{array} { | c | c | } \hline \text { Age } & \text { Distance walked/week } \\\hline 18 & 25 \\\hline 20 & 22 \\\hline 21 & 20 \\\hline 25 & 23 \\\hline 26 & 18 \\\hline 29 & 15 \\\hline 38 & 19 \\\hline 34 & 16 \\\hline 42 & 14 \\\hline 23 & 21 \\\hline 32 & 24 \\\hline 45 & 13 \\\hline 50 & 11 \\\hline 53 & 9 \\\hline 44 & 10 \\\hline 19 & 28 \\\hline 28 & 26 \\\hline 35 & 17 \\\hline 49 & 12 \\\hline 27 & 27 \\\hline\end{array}$$
a. Create a scatter chart for these 20 observations.
b. Fit a linear trendline to the 20 observations. What can you say about the relationship between the two quantitative variables?

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Definitions:

Homologous Chromosomes

Pairs of chromosomes in a diploid organism that are similar in shape, size, and gene content.

Down Syndrome

A genetic disorder caused by the presence of all or part of a third copy of chromosome 21, characterized by developmental delays, physical growth limitations, and distinctive facial features.

Chromosome 21

The smallest human chromosome, abnormalities in which can lead to Down syndrome.

Amino Acid Sequence

The order of amino acids in a protein, determining its structure and function.