## ã5.4.bã āĻĒāĻ°āĻŋāĻ¸āĻāĻā§āĻ¯āĻžāĻ¨ āĻŦāĻŋāĻˇā§āĻ āĻĒā§āĻ°ā§āĻ¯āĻžāĻāĻāĻŋāĻ¸

[Math Center] 1. Each employee of a certain company is in either Department [latex]X[latex] or Department [latex]Y[latex], and there are more than twice as many employees in Department [latex]X[latex] as in Department [latex]Y[latex]. The average (arithmetic mean) salary is \$[latex]25,000[latex] for the employees in Department [latex]X[latex] and \$[latex]35,000[latex] for the employees in Department [latex]Y[latex]. Which […]

## ã5.3.aã āĻĄāĻžāĻŦāĻ˛-āĻ¸ā§āĻāĻŽā§āĻ¯āĻžāĻā§āĻ°āĻŋāĻā§āĻ¸ āĻāĻŦāĻ āĻ­ā§āĻ¨ āĻĄāĻžā§āĻžāĻā§āĻ°āĻžāĻŽ āĻ¸āĻŽā§āĻĒāĻ°ā§āĻāĻŋāĻ¤ āĻĒā§āĻ°āĻļā§āĻ¨

[Math Center] 1. Among the [latex]9,000[latex] people attending a football game at College [latex]C[latex], there were [latex]x[latex] students from College [latex]C[latex] and [latex]y[latex] students who were not from College [latex]C[latex]. Quantity A Quantity B The number of people attending the game who were not students [latex]9000-x-y[latex]     2. In a survey of [latex]250[latex] European […]

## ã5.2.bãPercentile Related Practice

[Math Center] 1. The random variable [latex]X[latex] is normally distributed. The values [latex]650[latex] and [latex]850[latex] are at the [latex]60[latex]th and [latex]90[latex]th percentiles of the distribution of [latex]X[latex], respectively. Quantity A Quantity B The value at the [latex]75[latex]th percentile of the distribution of [latex]X[latex] [latex]750[latex]   2. Eight hundred insects were weighed, and the resulting measurements, […]

## ã5.3.aãāĻĄāĻžāĻŦāĻ˛-āĻ¸ā§āĻāĻŽā§āĻ¯āĻžāĻā§āĻ°āĻŋāĻā§āĻ¸ āĻāĻŦāĻ āĻ­ā§āĻ¨ āĻĄāĻžā§āĻžāĻā§āĻ°āĻžāĻŽ

Â [Math Center Home] [āĻ¨ā§āĻāĻ āĻāĻ āĻāĻ°ā§āĻāĻŋāĻā§āĻ˛āĻāĻŋ (5)Â Statistics and D.I. āĻŦāĻŋāĻ­āĻžāĻā§āĻ°Â āĻāĻ§ā§āĻ¨ā§Â ã3ãOverlapping and Venn Diagrams āĻā§āĻ¯āĻžāĻĒā§āĻāĻžāĻ°ā§āĻ° āĻāĻ¨ā§āĻ¤āĻ°ā§āĻāĻ¤, āĻ¯āĻžÂ ã5.3.aãāĻāĻŋāĻšā§āĻ¨ āĻĻāĻŋā§ā§ āĻĒā§āĻ°āĻāĻžāĻļ āĻāĻ°āĻž āĻšā§ā§āĻā§] ã5.3.aãāĻĄāĻžāĻŦāĻ˛-āĻ¸ā§āĻāĻŽā§āĻ¯āĻžāĻā§āĻ°āĻŋāĻā§āĻ¸ āĻāĻŦāĻ āĻ­ā§āĻ¨ āĻĄāĻžā§āĻžāĻā§āĻ°āĻžāĻŽ Overlapping Sets āĻ¸āĻžāĻ§āĻžāĻ°āĻŖāĻ¤āĻ āĻ­ā§āĻ¨āĻāĻŋāĻ¤ā§āĻ° āĻŦāĻž āĻ­ā§āĻ¨āĻĄāĻžā§āĻžāĻā§āĻ°āĻžāĻŽ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ° āĻāĻ°ā§ āĻ āĻ§āĻ°āĻŖā§āĻ° āĻāĻā§āĻ āĻ¸āĻŽāĻžāĻ§āĻžāĻ¨ āĻāĻ°āĻž āĻšā§āĨ¤ āĻ āĻāĻžā§āĻž āĻ­ā§āĻ¨āĻĄāĻžā§āĻžāĻā§āĻ°āĻžāĻŽā§āĻ° āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤ā§ āĻĄāĻžāĻŦāĻ˛-āĻ¸ā§āĻāĻŽā§āĻ¯āĻžāĻā§āĻ°āĻŋāĻā§āĻ¸ āĻ¨āĻŋā§ā§ āĻāĻŋāĻ­āĻžāĻŦā§ āĻāĻ­āĻžāĻ°āĻ˛ā§āĻ¯āĻžāĻĒāĻŋāĻ āĻ¸ā§āĻ āĻāĻ° āĻ¸āĻŽāĻžāĻ§āĻžāĻ¨ āĻāĻ°āĻ¤ā§ āĻšā§ āĻāĻŽāĻ°āĻž āĻāĻāĻžāĻ¨ā§ āĻ¸ā§ āĻŦāĻŋāĻˇā§āĻāĻž […]

## ã5.4.aãāĻĒāĻ°āĻŋāĻ¸āĻāĻā§āĻ¯āĻžāĻ¨āĻ āĻā§ āĻ¨āĻŋāĻ°ā§āĻŖā§

Â [Math Center Home] [āĻ¨ā§āĻāĻ āĻāĻ āĻāĻ°ā§āĻāĻŋāĻā§āĻ˛āĻāĻŋ (5)Â Statistics and D.I. āĻŦāĻŋāĻ­āĻžāĻā§āĻ°Â āĻāĻ§ā§āĻ¨ā§Â ã4ãAverage āĻā§āĻ¯āĻžāĻĒā§āĻāĻžāĻ°ā§āĻ° āĻāĻ¨ā§āĻ¤āĻ°ā§āĻāĻ¤, āĻ¯āĻžÂ ã5.4.aãāĻāĻŋāĻšā§āĻ¨ āĻĻāĻŋā§ā§ āĻĒā§āĻ°āĻāĻžāĻļ āĻāĻ°āĻž āĻšā§ā§āĻā§] ã5.4.aãāĻĒāĻ°āĻŋāĻ¸āĻāĻā§āĻ¯āĻžāĻ¨āĻ āĻā§ āĻ¨āĻŋāĻ°ā§āĻŖā§ The average (or the arithmetic mean) of a set is given by the following formula: AverageÂ  = sum/# of terms,Â which is abbreviated as [latex]A=S/n[latex] The sum, [latex]S[latex], refers to the sum of all the terms […]