Having outliers in our data may affect the IQR but the sample range is unchanged

Q: for CEO salaries throughout the united states (not just the data set we used in class) which has a…

A: we know that distribution skewed to right means positively skewed data. In this case, the measures…

Q: Does the sample median tend to target the population variance

A: If the original distribution is normal, the sample mean will also be normal, with variance , where n…

Q: The five number summary of a dataset was found to be: 2, 5, 11, 16, 18 An observation is considered…

A: For the given set of data as follows: 2, 5, 11, 16, 18 The 5 number summary will be as follows: 1.…

Q: At a large industrial plant, employees were classified according to age and given a leadership exam.…

A: Hypothesis testing is an inferential procedure of testing a claim about a population characteristic.

Q: Having outliers in our data may affect the IQR but the sample range is unchanged O True O False

A: The IQR and sample range are defined as IQR = Q3 - Q1 Sample range = Maximum - Minimum Note : Since…

Q: Could two samples have the same range but different means? Explain.

A: Yes, Two samples have the same range but different means.

Q: What caution is must for finding the median for ordered qualitative data?

A:

Q: How can the specific characteristics of a population affect the analysis of data?

A: The basic data which is collected for any population before the analysis of data is their…

Q: Explain why the minimum and maximum observations are added to the three quartiles to describe better…

A: Quartile: Quartiles are the values which divides the data into four equal parts. First quartile:…

Q: The five number summary of a dataset was found to be: 45, 53, 55, 65, 70 An observation is…

A: From the given five number summary:   Minimum value=45 Lower Quartile (First Quartile)=53 Median=55…

Q: If the outlier is removed, what is the median of the remaining sample data? 12, 26, 30, 15, 22, 4,…

A: Median:                   The median of a set of data is the middlemost number or center value in…

Q: Based on the boxplots and the mean/median relationship what is the shape of each data set? Explain…

A: Given:

Q: The ages(in months) that babies spoke for the first time are…

A:

Q: A study wants to do research on whether or not the median age of social media users is getting…

A: The study seeks to investigate whether the average age of social media users is small or not. Data…

Q: If there are outliers, then the mean will be greater than the median.  True  False

A: If there are outliers present in the data, the mean and median can have any value. The mean can be…

Q: Why is the median less affected by skewed data than the mean?

A: Mean: The average values of the total observations. Median: The value that divided data set into two…

Q: The best point estimator for the population mean is the sample mean. True False

A: TRUE

Q: What are the main differences between outliers and influential observations

A: Outlier and inferential observations are both observed in the regression. In the scatter diagram,…

Q: What is helpful to interpret bivariate tables~ percentages or frequencies?

A: Given that  We have to define  What is helpful to interpret bivariate tables percentages or…

Q: Explain what is an outlier and how it may affect the data results of an investigation

A: We have to explain an outlier and write how it may affect the data results of an investigation.

Q: How can we check to see how much the presence of an outlier (or perhaps a few outliers) affect the…

A: Most used statistics are Mean, Median and Mode. Let us now discuss the effect of outliers on…

Q: How does a small sample size increase the effect of an outlier on the mean in a skewed distribution?…

A: A skewed distribution mean one tail is longer than the other.

Q: What is the difference between an influential point and an outlier?

A: Outliers: Data points that diverge in a large way from the overall pattern are called outliers. A…

Q: A data set has a median 70, 1st quartile 65 and 3rd quartile 85 .Which of the following will…

A: Given that median = 70,  First quartile Q1 = 65 Third quartile Q3 = 85, then Inter quartile range…

Q: The five number summary of a dataset was found to be: 0, 5, 10, 17, 19 An observation is considered…

A:

Q: What is an outlier and how can we identify them?

A: Outlier :   Outliers are data points that are far from other data points. In other words, they’re…

Q: According to the Law of Large Numbers what effect will increasing the sample size have on the sample…

A: It is given that the sample size increases.

Q: How will a high outlier in a data set affect the mean and median?

A: There is the effect of an outlier on the median value.

Q: Explain how you will ensure that data samples are of adequate size and are population when you…

A: It is asked to explain how you will ensure that data samples are of adequate size and are…

Q: How to calculate the median of a data

A: The median can be defined as the middle value of the data set or distribution. The median for the…

Q: The five number summary of a dataset was found to be: 0, 7, 14, 16, 19 An observation is considered…

A:

Q: If there are outliers, then the mean will be greater than the median.

A: Consider the given statement, "If there are outliers, then the mean will be greater than the…

Q: What is the general shape of the data? Are there any outliers in the data? (If so, what are the…

A: Given data is:

Q: Explain how the interquartile range of a data set can be used to identify outliers.

A: Use Of InterQuartile Range in Identifying the outlers.Throught the Interquartile range we can find…

Q: Are graphs effective substitutes for the statistical treatment of data?

A: Contributions to statistical graphics, including effective use of graphs and charts to communicate…

Q: Mean is advantageous than the median because a. It is not influenced by extreme values

A: The mean is the average value of the data set and is computed by summing up all the observations and…

Q: re interested in examining the variability in current marital status by race. Which measure of…

A: Nominal variables are used with categorical data because they do not have quantitative values. In…

Q: Having outliers in our data may affect the IQR but the sample range is unchanged True False

A: The sample range is defined as Range = Max - min. And the IQR is calculated as IQR = Q3 - Q1

Q: When we comparing the hospitals in our area for seeking a better care, what statistics or data we…

A: It is an important part of statistics. It is widely used.

Q: What is the largest value in the dataset? What the is median of the data displayed? What is the mode…

A: From stem and leaf plot, the largest value in the dataset is 7.5.

Q: Calculate the probable outlier data points.

A: Lower quartile = 13 Upper quartile = 24.5

Q: The five number summary of a dataset was found to be: 0,5, 9, 15, 19 An observation is considered an…

A: The observation is considered an outlier if it is below Q1-1.5*IQR The observation is considered an…

Q: Please also explain why you determined whether or not the results are statistically significant.…

A: From the given information we conduct Hypothesis test.

Q: Why do we need to study the variation of a collection of data? Why isn't the average by itself…

A: Step 1: An important characteristic of a data set is the variation in the data. In many of the data…

Q: The five-number summary of a dataset was found to be: 1, 4, 13, 16, 18 An observation is considered…

A: The 1st and 3rd quartile can be calculated as: the Q1 can be calculated as: the Q3 can be…

Q: Too many outliers on our sample data is acceptable as long as data are summarized and presented by…

A:

Q: If we could not measure the population mean, we could use the sample mean as a point estimator of…

A: Given:  we could not measure the population mean, we could use the sample mean as a point estimator…

Q: The five number summary of a dataset was found to be: 1, 2, 12, 13, 18 An observation is considered…

A: