State the following data as categorical or numerical.

the number of computers in each house

A phone survey conducted for an insurance company rings \( 500 \) households between 11 am to 2 pm to ask what insurance company they prefer. State the intended population.

A score was added to the set of scores: \( 13, 18, 20, 20, 22 \) and \( 26 \). The new mean is equal to \( 19\). What score was added?

A shoe store makes sales with the median is 340 dollars and the mean is 310 dollars. Which is the best measure of centre use it to predict average profit?

What is the age of the child who is 35 kg?

Describe the relationship between two variables.

Predict \(x\) when \(y = 90\)

Use technology to find the equation, \(y = mx + b\) of the linear regression for the data by considering any outliers. Express coefficients correct to two decimal places.

\( \begin{array}{|c|c|c|} \hline
x & 11 &12 &14 &16 &19 &21 &25 \\ \hline
y & 11 &17 &21 &27 &20 &98 &110 \\ \hline
\end{array} \)

Use technology to find the equation, \(y = mx + b\) of the linear regression for the data by considering any outliers. Express coefficients correct to two decimal places.

\( \begin{array}{|c|c|c|} \hline
x & 2 &7 &11 &18 &21 &25 &31 \\ \hline
y & 12 &14 &97 &121 &5 &24 &29 \\ \hline
\end{array} \)

When estimating a value within the range of collected data, this is called interpolation and the estimate is quite reliable.