Share
Explore BrainMass

Frequency Distribution

Cost Benefit Analysis

A certain type of injury has tangible costs of $40,000 per occurrence and intangible costs of $150,000 per occurrence. Injury frequency is .05 per year but would be reducible to .01 per year with the installation of a new guarding system. Calculate the annual benefit the new system provides. A certain company estimates that i

Frequency distribution and measures of variation

Pandas: The size of the home ranges (in square kilometers) of several pandas were surveyed over a year's time, with the following results. Home Range Frequency .1-.5 11 .6-1.0 12 1.1-1.5 7 1.6-2.0 6 2.1-2.5 2 2.6-3.0 1 3.1-3.5 1 Sketch a histogram and frequ

Basic Statistics and Probability

Question 2 Construct a frequency distribution (class, tally and frequency) for the data set using the indicated number of classes. In the table, include the midpoint, relative frequencies and cumulative frequencies. Also construct a relative frequency histogram. Number of class: 5 Data set: 14 10 6 4 19 20 11 5 12 18 5 10 13 2

Frequency distribution and statistical analysis

This assignment involves the variability in a sample of jewell cases from various venders. The student is to play the part of a purchasing agent who has exacting requirements for jewell cases and must choose the vendor that will provide the most consistant product.

Multiple Choice Questions

16. Given this frequency distribution, the random number 0.61 would be interpreted as a demand of: a) 0 b) 1 c) 2 d) 3 17. A graduate research assistant "moonlights" at the short order counter in the student union snack bar in the evenings. He is considering asking for help taking or

The Precision Scientific Instrument Company

The Precision Scientific Instrument Company manufactures thermometers which are supposed to give readings of 0o C at the freezing point of water. Tests on a large sample of these thermometers reveal that at the freezing point of water, some give readings below 0o C (denoted by negative numbers) and some give readings above 0o C

Distribution of samples

The Appliance Center has six sales representatives at their North Jacksonville outlet. Listed below is the number of refrigerators sold by each last month. Sales Representative Number Sold Zina Craft 54 Woon Junge 50 Ernie DeBrul

Assist with interpretation

Analyze the data and graph for each city. Then compare results. (Interpret each city individual then do a comparison of both cities). Graphs and Data are based on the 10 lowest temperatures only. (See attached file for full problem description)

Assist w/problems

1. Each raw datum is the monthly rent in dollars for a one-bedroom apartment in 20 different complexes. 200 185 325 320 180 225 210 235 225 310 290 250 285 190 235 245 205 230 260 290 Suppose you decide to group the given raw data into a frequency table with eight classes. What would your class width be? $18

Frequency Distribution to Find the Probability

AGES OF VOTERS FREQUENCY ( IN MILLIONS) 18-20 YEARS 4.4 21-24 7.7 25-34 20.2 35-44 28.7 45-64 43.4 65 YEARS AND OVER 24.6 PROBABILITY (VOTERS IS 65 YEARS AND OLDER) ROUND TO FOUR DECIMAL PLACES PLEASE EXPLAIN STEP BY STEP FOR I TO UNDERSTAND AND SOLVE THE NEXT ONE THAN

Approximate the Mean of the Group Data

Approximate the mean of the grouped data. The age distribution of students in a statistics class. Age frequency 20-29 23 30-39 24 40-49 23 50-59 19 60-69 8 What is the mean age of the students based on this given frequency distribution? Round to the

Frequency distribution

Construct a frequency distribution for the data set using the indicated number of classes. Determine which class has the greatest frequency and which has the lease frequency. Number of classes: 5 12 26 55 15 20 88 76 24 88 68 58 32 31 45 76 29 31 0 38 81 22 56 45 39 37 65 Which class has the greatest frequency? a) 19

Finding the aprroximated mean of grouped data

Approximate the mean of the grouped data: The age distribution of students, i, a statistics class. Age: 20-29 30-39 40-49 50-59 60-69 Frequency: 24 21 21 22 6 What is the mean age of the students based on this given frequency distribution? (round to the nearest hundredth)

Statistics

9.3 5.3 6.3 8.8 6.5 0.6 5.2 6.6 9.3 4.3 6.3 2.1 2.7 0.4 3.7 3.3 1.1 2.7 6.7 6.5 4.3 9.7 7.7 5.2 1.7 8.5 4.2 5.5 5.1 5.6 5.4 4.8 2.1 10.1 1.3 5.6 2.4 2.4 4.7 1.7 2 6.7 1.1 6.7 2.2 2.6 9.8 6.4 4.9 5.2 4.5 9.3 7.9 4.6 4.3 4.5 9.2 8.5 6 8.1 Organize the data into frequency distribution. How many classes w

Class intervals, limits, and frequency distribution

The following data give the weekly amounts spent on groceries for a sample of households. $271 $363 $159 $76 $227 $337 $295 $319 $250 279 205 279 266 199 177 162 232 303 192 181 321 309 246 278 50 41 335 116 100 151 240 474 297 170 188 320 429 294 570 342 279 235 434 123 325 a. How many classes do you recommend? b. Wh

Three varied statistics problems

1. Suppose that you had one hundred individuals' test scores on a 200-point test. Suppose that the distribution of test scores was as follows. 70 percent of the scores were between 95 and 105. the remainder of the scores were spread out approximately evenly in each of two tails of the distribution. Which of the following bes

Statistics: factors in the process of distribution

Problem 13.5 A mail-order catalog business selling personal computer supplies, software, and hardware maintains a centralized warehouse. Management is currently examining the process of distribution from the warehouse and wants to study the factors that affect warehouse distribution costs. Currently, a small handling fee is adde

Hourly wages, frequency

The following chart shows the hourly wages of a sample of certified welders in the Atlanta, Georgia, area. (see attached) How many welders were studied? What is the class interval? About how many welders earn less than $10.00 per hour? About 75 percent of the welders make less than what amount? Ten of the welders s

The Quick Change Oil Company

The Quick Change Oil Company has a number of outlets in the metropolitan Seattle area. The numbers of oil changes at the Oak Street outlet in the past 20 days are: (see attached file for chart) The data is to be organized into a frequency distribution. 1. How many classes would you recommend? 2. What class interva

Lower Limit, Classes and Intervals

The following data give the weekly amounts spent on groceries for a sample of households. $271 $363 $159 $ 76 $227 $337 $295 $319 $250 279 205 279 266 199 177 162 232 303 192 181 321 309 246 278 50 41 335 116 100 151 240 474 297 170

The manufacturer of a computer terminal reports...

The manufacturer of a computer terminal reports in its advertising that the mean life of the terminal, under normal use, is 6 years, with a standard deviation of 1.4 years. (Assume these are population values.) A sample of 90 units sold 10 years ago revealed the following distribution of the lengths of life. At the .05 signif

Frequency Distibution Problems

30.Determine the estimated mean of the following frequency distribution class frequency 0 up to 5 2 5 up to 10 7 10 up to 15 12 15 up to 20 6 20

Finding the estimated mean

30) Determine the estimated mean of the following frequency distribution Class frequency 0 up to 5 2 5 up to 10 7 10 up to 15 12 15 up to 20 6 20 up to 25 3