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Chapter 3: Q. 192 (page 147)

Identify each quantity as a parameter or a static
(a) $μ$
(b) $s$
(c) $\bar{x}$
(d) $σ$

Short Answer

Expert verified

(a) $μ$ is parameter quantity

(b) $s$ is statistic quantity

(c) $\bar{x}$ is statistic quantity

(d) $σ$ is parameter quantity

Step by step solution

01

Given Information

We are given $4$ quantities $μ, s, \bar{x}, σ$ .

We need to identify whether quantity is parameter or statistics.

02

Step 2:Explanation

A statisticis a quantity that describes some characteristic of a sample.

A parameteris a quantity that describes some characteristic of a population.

Hence, $\bar{x}$ and $s$ are static quantities.

Hence, $μ$ and $σ$ are parameter quantities.

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Most popular questions from this chapter

The data set has mean $30$ and standard deviation $4$ . Approximately what percentage of the observations lie between $22$ and $38$ ?

Is an extreme observation necessary an outlier? Explain your answer.

Consider these sample data: $x_{1} = 12, x_{2} = 8, x_{3} = 9, x_{4} = 17$

a) Find $n$ .

b) Compute $\sum x_{i}$ .

c) Determine $\bar{x}$ .

Identify the two most commonly used measures of center for

quantitative data. Explain the relative advantages and disadvantages

of each.

Fill in the following blanks.

(a) A standardized variable always has mean _____ and standard deviation _______ .

(b) The z-score corresponding to an observed value of a variable tells you ______ .

(c) A positive z-score indicates that the observation is ______ the mean, whereas a negative z-score indicates that the observation is _______ the mean.

See all solutions

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