# What is the measure of dispersion called?

Learning Goal: I’m working on a economics question and need an explanation and answer to help me learn.1) Define the following: (20 percentage points)a) Why is data classified by Histogram?b) What is the importance of Dot procedure for classifying data?c) What is a “population” in statistics?d) What is a sample?e) What is the common sampling method?f) What is the central tendency called?g) What observation basically describes a sample size?f) What is the measure of dispersion called?i) Sample mean or the population mean: which varies the most?J) Sample mean and individual observation: which varies the most?2) Calculate the variance and standard deviation from the following data (30 percentage points): Herd 1510490550450525475 Rule: If A and B are two events that may result from a single repetition of a random process, the probability that A and B or both will occur is the probability of A plus the probability of B minus the probability that both A and B occur.3a) What is the probability that one card selected from a deck of 52 cards will be a spade or number card or both? (10 percentage points).Rule: Given two events A and B, the probability of joint occurrence is the product of the probability of A and conditional probability of B given that A has occurred, or the probability of B multiplied by the conditional probability of A given that B has occurred.A container contains 3 white balls and 5 black balls. Draw two in a row without replacement.3b) What is the probability of black on first draw and white on second? (10 percentage points).Rule: The Poisson probability distribution describes the number of times some event occurs during a specified interval. The interval may be time, distance, area, or volume.4) Suppose 1.5 percent of the new Nokia cell phones are defective. For a random sample of 200 antennas, find the probability that: (10 percentage points).None of the antennas is defective
Three or more of the antennas are defective
Rule: Repeated Independent Trial-Random Process:A is one of the possible outcomes. The probability of A remains constant from one trial to the next. Repeated trials are independent (probability that in n trials, A occurs exactly r times).5) A pair of die is rolled 5 times, what is the probability of 3 sevens? Describe the magnitude of the calculated probability (20 percentage points).Bonus) An investment will be worth \$1000, \$2000, or \$5000 at the end of the year. The probabilities of these values are .25, .60, .15, respectively. Determine the mean and variance of the worth of the investment (5 percentage points).
Requirements: as needed

## Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
\$26
The price is based on these factors:
Number of pages
Urgency
Basic features
• Free title page and bibliography
• Unlimited revisions
• Plagiarism-free guarantee
• Money-back guarantee
On-demand options
• Writer’s samples
• Part-by-part delivery
• Overnight delivery
• Copies of used sources
Paper format
• 275 words per page
• 12 pt Arial/Times New Roman
• Double line spacing
• Any citation style (APA, MLA, Chicago/Turabian, Harvard)

# Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

### Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

### Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

### Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.