standard deviation Archives - Page 3 of 4

Create a box-plot for the “Annual Sales” variable. Does it look symmetric? Would you prefer the IQR instead of the standard deviation to describe this variable’s dispersion? Why?

Posted on November 4, 2021 by Ambrose

Answer the questions below in your Microsoft® Excel® sheet or in a separate Microsoft® Word document: Insert a new column in the database that corresponds to “Annual Sales.” Annual Sales is the result of multiplying a restaurant’s “SqFt.” by “Sales/SqFt.” Calculate the mean, standard deviation, skew, 5-number summary, and interquartile range (IQR) for each of […]

Create a box-plot for the “Annual Sales” variable. Does it look symmetric? Would you prefer the IQR instead of the standard deviation to describe this variable’s dispersion? Why?

Posted on November 2, 2021 by Ambrose

Statistics Analysis Conduct the following descriptive statistics analyses with Microsoft® Excel®. Answer the questions below in your Microsoft® Excel® sheet or in a separate Microsoft® Word document: Insert a new column in the database that corresponds to “Annual Sales.” Annual Sales is the result of multiplying a restaurant’s “SqFt.” by “Sales/SqFt.” Calculate the mean, standard […]

Describe what implications this concept has for management decision making.

Posted on October 27, 2021 by Ambrose

Cigarette prices: $9.07 / $9.52 / $8.90 / $9.10 / $8.99 / $9.09 / $9.06 / $9.00 / $9.05 / $9.16 Post a 150- to 225-word (2- to 3-paragraph) explanation of how probability distributions affect management decisions. In your explanation, address the following: Provide your results of the following: Your calculations for your standard deviation […]

Review the information listed below, and create a table of information using correct APA Style for formatting, spacing, and headings.

Posted on October 22, 2021 by Ambrose

Review the information listed below, and create a table of information using correct APA Style for formatting, spacing, and headings. Fifty participants were used to measure three latent variables: Job Satisfaction (A), Work Satisfaction (B), and Turnover Intention (C). The arithmetic means were A = 3.81, B = 3.41, and C = 4.14 with a […]

Create a digital presentation, to be used for professional development, which creatively and accurately explains the dimensions of descriptive statistics.

Posted on October 15, 2021 by Ambrose

Professional Development Presentation: Descriptive Statistics Understanding measurement principles and the characteristics of assessments helps to minimize bias in individual teacher assessment practices. The ability to explain descriptive statistics encourages deeper understanding of how data is derived to aid decision-making within the classroom setting. These skills will support collaboration with colleagues and families in making decisions […]

If you roll a single die and count the number of dots on top, what is the sample space of all possible outcomes? Are the outcomes equally likely?

Posted on October 12, 2021 by Ambrose

The following assignment will allow you to master the concepts you have learned on discrete probability distributions. 1. Answer the following questions based on rolling a single six-sided die. (2 points for each part) a) If you roll a single die and count the number of dots on top, what is the sample space of […]

The local news reported that 6% of U.S. drivers text on their cell phones while driving. If 300 drivers are selected at random, find the probability that exactly 25 say they text while driving. Be sure and use the continuity correction for the normal approximation to the binomial distribution.

Posted on October 12, 2021 by Ambrose

1. It is very important to be able to find probabilities for a given z score. Using software or a Standard Normal Distribution table, determine the following probability for the area (15 points) a. between z = -0.52 and z = 2.33 b. z > 1.65 c. z < 1.85 d. z < 0 e. […]

Using the data on the “National Cancer Institute Data” Excel spreadsheet, calculate the descriptive statistics indicated below for each of the Race/Ethnicity groups.

Posted on August 26, 2021 by Ambrose

Descriptive statistics Description There is often the requirement to evaluate descriptive statistics for data within the organization or for health care information. Every year the National Cancer Institute collects and publishes data based on patient demographics. Understanding differences between the groups based upon the collected data often informs health care professionals towards research, treatment options, […]

Calculate the total score for each student and convert this to a percentage. Present these results using an appropriate chart or graph.Do you believe that the test results are normally distributed? What evidence supports your conclusion?

Posted on August 21, 2021 by Ambrose

Assignment Details The data in the file shows the test results for a group of 15 students. The students were set 8 questions, each of which were equally weighted. Depending on the accuracy of the students’ answers they were awarded either 0, 1, 2 or 3 marks for each question. The test was set for […]

Find the variance, standard deviation and standard error, skewness and kurtosis for RW, ORA and SF data sets. Describe and compare the skewness and kurtosis for the three data sets. What do you notice?

Posted on August 9, 2021 by Ambrose

Description The following data is provided about the number of species spotted in the whole area of a specific reserve and in a specific small forest that is a part of that reserve. The table below provides a breakdown of the species spotted. Small Forest (SF) Name Number Species 1 0 Species 2 23,228 Species […]

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Tag: standard deviation

Create a box-plot for the “Annual Sales” variable. Does it look symmetric? Would you prefer the IQR instead of the standard deviation to describe this variable’s dispersion? Why?

Create a box-plot for the “Annual Sales” variable. Does it look symmetric? Would you prefer the IQR instead of the standard deviation to describe this variable’s dispersion? Why?

Describe what implications this concept has for management decision making.

Review the information listed below, and create a table of information using correct APA Style for formatting, spacing, and headings.

Create a digital presentation, to be used for professional development, which creatively and accurately explains the dimensions of descriptive statistics.

If you roll a single die and count the number of dots on top, what is the sample space of all possible outcomes? Are the outcomes equally likely?

The local news reported that 6% of U.S. drivers text on their cell phones while driving. If 300 drivers are selected at random, find the probability that exactly 25 say they text while driving. Be sure and use the continuity correction for the normal approximation to the binomial distribution.

Using the data on the “National Cancer Institute Data” Excel spreadsheet, calculate the descriptive statistics indicated below for each of the Race/Ethnicity groups.

Calculate the total score for each student and convert this to a percentage. Present these results using an appropriate chart or graph.Do you believe that the test results are normally distributed? What evidence supports your conclusion?

Find the variance, standard deviation and standard error, skewness and kurtosis for RW, ORA and SF data sets. Describe and compare the skewness and kurtosis for the three data sets. What do you notice?