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Frequency Distribution

Purpose of developing a frequency distribution in business

1) What is the purpose of developing a frequency distribution in business? What is the relationship between the relative frequency and the cumulative frequency? Develop a frequency distribution table using data from the business world. Please provide a response explaining thoroughly.

Organize Data Overview

Â?¢organize the home prices in increasing order â?¢organize the prices into six bins â?¢create a table of frequencies and relative frequencies â?¢create a histogram and a pie chart â?¢write a brief conclusion about your data based on the results you have so far

Frequency Distributions

You are the production manager for an operation that produces circuit boards. Each board is tested at the end of the manufacturing process. Rejected boards are discarded and have no future value. For product B-17, you have kept data on the number of rejects for the past 38 weeks. These data are: Number of rejected bo

Construct a frequency distribution table

Q1 The following data show the cost of electricity during August 2010 for a random sample of 50 one-bedroom apartments in a large city: Raw Data on Electricity Charges (RM) 152 75 180 157 120 81 132 106 61 170 120 164 69 95 151 90 127 192 100 144 120 120 185 154 102 107 123 147 88 146 74 142 129 133 109 122 166 145 118

Mean & Variance

1.) A commuter travels many miles to work each morning. She has timed this trip 5 times during the last month. The time (in minutes) required to make this trip was 44, 39, 41, 35, and 41. The mean time required for this trip was 40 minutes. What is the variance for this sample data? 2.) The ages of students in a class have b

Percentages and Frequency of Scores

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: Suggestion: make a drawing and label first a. Percentage of scores less than 100 b. Relative frequency of scores less than 120 c. Percentage of scores less

Expected Frequencies and Goodness of Fit Test

A salesperson makes four calls per day. A sample of 100 days gives the following frequencies of sales volumes. Number of Sales 0 1 2 3 4 Observed Frequency 30 32 25 10 3 Total 100 Records show sales are made to 30% of all sales calls. Assuming independent sales

Excel function to test educational level and frequency

See attached file. Use the instructions on the first tab to complete Steps 1 Count the number of times each educational level. This may be done by Excel function, COUNTIF(list, "1") Alternatively, the Status data may be sorted and counted 2 Highlight Ed Level & Freq column data 3 Insert th

Statistics Problems 2.35, 2.51: Electric insulators, dark chocolate bars

See attached file. Please explain in detail, step by step. 2.35: The manufacturing company is Problem 2.34 also produces electric insulators. If the insulators break when in use, a short circuit is likely to occur. To test the strength of the insulators, desructive testing in high-powered labs is carried out to determine how

Frequency distribution, mean, median, mode, range, standard deviation

1. Students in a social work course received the following course grades: 83, 92, 92, 59, 72, 81, 27, 55, 70, 37, 62, 73, 71, 82, 83, 48, 96, 65, 66, 86, 79, 82, 95, 81, 96 o Create a frequency distribution for this data. o Compute the mean. o Determine the median. o Determine the mode. o Identify the range. o What is t

Prepare a frequency distribution from the given data

Prepare a frequency distribution from the data given below that describes how long it took a person to drive to work in a work week. Monday-15 minutes Tuesday-10 minutes Wednesday-25 minutes Thursday-9 minutes Friday-10 minutes Calculate the Standard Deviation of above data. Is this a normal distribution? What

Organize the data into a Frequency Distribution

The Quick Change Oil Company has a number of outlets in the Seattle area. The daily number of oil changes at the outlet in the past twenty days are: 65, 98, 55, 62, 79, 59, 51, 90, 72, 56 70, 62, 66, 80, 94, 79, 63, 73, 71, 85 The data is to be organized into a frequency distribution how many classes would you recommen

Frequency distribution and relative frequency distribution

How do I determine the frequency distribution and relative frequency distribution. Example is below. How do I get frequency and relative frequency? Number of patients served for the first 16 days Patients 24.0 - 25.5 -- frequency = 2, relative frequency = 0.125 Patients 25.5 - 27.0 --frequency = 4. relative frequency = 0.

Relative frequency-Patient's weight and surgical recovery

1. A medical research project examined the relationship between a subject's weight and recovery time from a surgical procedure, as shown in the table below. Underweight Normal weight Overweight Totals Less than 5 days 8 20 6 5 to 9 days 35 85 10 Over 9 days 18 45 37 Totals a. Use relative frequency to

Constructing frequency distribution tables, histogram and curve, and key points

This is a practice exam question for my stats course that I am taking. If you would be able to help me solve this question, and with some instructions, that would be fantastic. Following is the data on the 'Left -Ventricular-Ejection-Fraction' LVEF in percent of 30 diabetic patients with abnormal cardiac condition: 68 76 7

Statistics

1. The maximum number of seats in a sample of 13 sport utility vehicles are listed below. Find the mean, median, and mode of the data 8 10 11 11 8 9 7 7 7 7 7 7 8 Find the mode. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The mode is _______ (Type

Frequency Tables, Distributions and Graphic Presentation

See attached for tables and data. 1) Midland National Bank selected a sample of 40 student checking accounts. Below are their end-of-the-month balances. a. Tally the data into a frequency distribution using $100 as a class interval and $0 as the starting point. b. Draw a cumulative frequency polygon. c. The bank con

Frequency Table and Histogram Problem

Following are the speeds of 40 cars clocked by radar on a particular road in a 35-mph zone on a particular afternoon: 30, 36, 42, 36, 30, 52, 36, 34, 36, 33, 30, 32, 35, 32, 37, 34, 36, 31, 35, 20, 24, 46, 23, 31, 32, 45, 34, 37, 28, 40, 34, 38, 40, 52, 31, 33, 15, 27, 36, 40 Make (a) a frequency table and (b) a histogram. T

Statistics: Baseball fans, binominal, poisson, and frequency distribution

1. Find P(3) when p=.70 (round to 5 places) 2. 57% of men consider themselves professional baseball fans. You randomly select 10 men and ask each if he considers himself a professional baseball fan. Find the probability that the number who consider themselves baseball fans is (a) exactly 8 (b) at least eight (c) less than 8

Basic Statistics using Excel and Eviews

See attached files for assignments. TASK1 You are required to prepare a dataset consisting of the Income (X) in £ per week and Years of Education (Y) of 40 randomly chosen adults and then perform the following exercises. (You may enter numbers representing these characteristics of fictitious individuals, provided these are

Drying rate

1. The drying rate in an industrial process is dependent on many factors and varies according to the following distribution. Minutes Relative Frequency 3 0.22 4 0.36 5 0.28 6 0.10 7 0.04 Using these random numbers 0.53; 0.65; 0.98; 0.94; 0.07; and 0.99 , sim

Statistics problem

1. An insecticide company exposes 10,000 cockroaches to its newest product, and exposes another 10,000 to their previous formula. The researchers use videotape to count how many cockroaches are still alive, and how many appear to be in distress, at 10 second intervals. When the test is completed, the researchers determine the