Instruction 2 Note: 1L Means the 'Low Teens' - 10, 11, 12

question 164

Short Answer

Instruction 2.5
The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in the Supreme Court of Victoria.
$$\begin{array} { | l | l | } \hline \text { Stem } & \text { Leaves } \\\hline 1 \mathrm {~L} & 23444 \\\hline 1 \mathrm { H } & 7899 \\\hline 2 \mathrm {~L} & 2222345 \\& 5 \\\hline 2 \mathrm { H } & 678889 \\\hline 3 \mathrm {~L} & 001113 \\\hline 3 \mathrm { H } & 5778 \\\hline 4 \mathrm {~L} & 0234 \\\hline 4 \mathrm { H } & 5579 \\\hline 5 \mathrm {~L} & 1124 \\\hline 5 \mathrm { H } & 66 \\\hline 6 \mathrm {~L} & 15 \\\hline 6 \mathrm { H } & 8 \\\hline\end{array}$$ Note: 1L means the 'low teens' - 10, 11, 12, 13, or 14; 1H means the 'high teens' - 15, 16, 17, 18, or 19; 2L means the 'low twenties' - 20, 21, 22, 23, or 24, etc.
-Referring to Instruction 2.5,if a frequency distribution with equal-sized classes was made from this data,and the first class was '0 but less than 10',the class mid-point of the third class would be _________.

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Definitions:

Normally Distributed

Describes a continuous variable whose probabilities are symmetrically distributed around the mean, forming a bell-shaped curve known as the normal distribution.

Duration

A measure of the sensitivity of the price of a bond or other debt instrument to changes in interest rates.

Unbiased Estimator

A statistic that accurately estimates the true parameter of a population, meaning its expected value equals the parameter being estimated.

Consistent Estimator

An attribute of an estimator indicating that, as the sample size increases, it converges in probability to the true parameter it estimates.