Organizing data into a frequency distribution

Assignment Help Basic Statistics

Reference no: EM1317198

Q1) Farming has changed from early 1900s. In early 20th century, machinery gradually replaced animal power. For instance, in 1910 U.S. farms used 24.2 million horses and mules and only about 1,000 tractors.

By 1960, 4.6 million tractors were utilized and only 3.2 million horses and mules. In 1920 there were over 6 million farms in United States. Today there are less than 2 million.

Given below is number of farms, in thousands, for each of 50 states. Write a paragraph summarizing your findings.

Q2) Merrill Lynch recently completed study regarding size of online investment portfolios (stocks, bonds, mutual funds, and certificates of deposit) for sample of clients in 40- to 50-year-old age group.

Listed following is value of all investments in thousands of dollars for the 70 participants in the study.

a) Organize data into a frequency distribution. How many classes would you propose? What value would you propose for class interval?

b) Sketch a histogram. Interpret your result.

Reference no: EM1317198

Questions Cloud

Relationship of prevalence to predictive value positive : If sensitivity and specificity remain constant, determine the relationship of prevalence to predictive value positive and predictive value negative?

Forming payoff matrix : Suppose both governments offer their respective company a subsidy of $4(million), but only if they produce. Airbus is still able to produce before Boeing. Fill in the new payoff matrix below. What is the equilibrium outcome?

Regarding level of order traversal : Write down a level order traversal that does every level of the binary tree before moving on to the next level. Starting with the root add the children nodes to list.

Sample size required to obtain error : What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?

Organizing data into a frequency distribution : Organize data into a frequency distribution. How many classes would you propose? What value would you propose for class interval?

Checking normality assumption : Construct a 90 percent confidence interval for the proportion of all kernels that would not pop. Check the normality assumption.

Developing a single neural network : The team member A proposes that you must develop a single neural network which may handle all these stocks. However the member B insists that you have to design the five networks (one for each stock).

Calculating correlation coefficient for sample data : Calculate correlation coefficient for these sample data.

Changes in income and price of goods : Suppose a consumer has a daily income of $100 and purchases just two goods A and B. The price of good A is $5 and the price of good B is $4.

User Account

All Pages