# Skewness

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• ## Assignment 3 Data Analysis

from each other, and within each sample, the observations are sampled randomly and independently of each other. 2. The visual interpretation of the histogram is that there is a positive kurtosis and a negative skewness. Descriptive Statistics N Minimum Maximum Mean Std. Deviation Skewness Kurtosis Statistic Statistic Statistic Statistic Statistic Statistic Std. Error Statistic Std. Error quiz3 105 0 10 8.05 2.322 -1.177 .236 .805 .467 Valid N (listwise) 105 The descriptive statistics of the mean and standard deviation interpret that there is a negative skewness and a positive kurtosis. Tests of Normality Kolmogorov-Smirnova Shapiro-Wilk Statistic df Sig. Statistic df Sig. quiz3 .221 105 .000 .818 105 .000 a. Lilliefors Significance Correction The Shapiro –Wilk tests shows a p-value of .000 therefore we can round up to .001 and accept that the data comes from a normal distribution. Test of Homogeneity of Variances quiz3 Levene Statistic df1 df2 Sig. 1.576 2 102 .212 The significance level from the Levene’s test yield that the variability in the two conditions is not significantly different, as the significance level is greater than .05. 3. Overall, the assumptions have been met. The descriptive data interpretation of a negative, skewness and positive kurtosis yields that the variance is skewed, and the p-value of .001 yields that the data is from a normal distribution. Research Question, Hypotheses, and Alpha Level 1. Is there a significant…

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• ## Case Study A-Carp Corporation

III. Identify statistical tools and methods to collect data: A. Identify Appropriate Family and Reason for Selecting it. To analyze A-Cap Corporation’s data, I will use measures of central tendency and distribution. Measure of central tendency is a measure used to describe the mean, median, and mode of a particular set of data while measure of distribution shows the skewness, kurtosis, and develops a hypothesis about a particular set of data. The reason I selected these two measures is that they…

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• ## Feelings Of Anxiety And Regression Analysis

from -.80 to -1.14. While the kurtosis value for video threat was not noteworthy, it was nonetheless positively skewed as is evidenced especially by its histogram (see Figure 1). On the other hand, experienced tension-anxiety before and after viewing the video were more positively skewed as is also evidenced by their respective histograms (see Figure 2 and 3). Tension-anxiety before had a skewness value of 2.18, making its distribution non-normal given that the value is just outside of the +-…

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• ## Descriptive Statistics

Outliers can be unusually minimum or maximum value while compared with the rest of the data set. The median is the middle value of a set of data containing an odd number of values, or the average of the two middle values of a set of data with an even number of values. The median is especially helpful when separating data into two equal sized bins. Another typical case when mean would not be a useful measure of central tendency is when the data is skewed. A distribution, or data set, is symmetric…

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• ## Introduction To Quantitative Analysis

2.466 Variance .608 6.080 Skewness .700 2.196 Std. Error of Skewness .011 .011 Kurtosis -1.018 12.307 Std. Error of Kurtosis .022 .022 Range 2 53 Minimum 1 1 Maximum 3 54 Sum 85073 187527 Percentiles 25 1.00 2.00 50 1.00 3.00 75 2.00 5.00 AGE is a categorical variable, which signifies that mode will be an appropriate measure of central tendency. The mode for the variable AGE is 1, which signifies that majority of the respondents fall in the age group of 18-35 years. Since the ADULTCT…

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• ## Descriptive Statistics And Frequency Analysis

Through reviewing the minimum, maximum, and range of values I attempted to discern and identify potential coding errors as well as invalid data. The nature and distribution of the values were explored through examining the mean, standard deviation, and variance as well as skewness and kurtosis. For example, the variable Age contained 320 valid cases, with respondents ranging in age from 18 to 35 years. The mean age was 28.02 years with a standard deviation of 4.76 years. Emailtime and Wwwtime…

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• ## Summary: Explore Correlation And Regression

For example, the data in the Chamorro-Premuzic.sav file can be evaluated in a number of ways, for example analyzing the data based on the gender grouping allow one to visualize the data by manipulating the data using gender as a factor, then placing the remainder of the values as dependent variables. Evaluating the data in this way gives the investigator a better understanding of how the data is either normally distributed or perhaps skewed (Triola, 2008) . As identified in the case summery…

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• ## Racial Privilege In America

The introduction of the article opened with a statement that racial privilege still exists in America. Phillips and Lowery (2015) identify Caucasians as the most privileged of all races. They claimed that whites had better earnings (Hao, 2011) greater life expectancy (Bleich, Jarlenski, Bell, & LaVeist, 2012) better access to health care (Smedley, Stith, & Nelson, 2003) and high-quality education (Rumberger, 2010) than other races, specifically African-Americans. As a result of their view of…

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• ## The Importance Of Aperture Radar

ABSTRACT Using remote sensing technology is an effective way to observe and verify the wise and sustainable use of natural resources. With its weather and daylight independency Synthetic Aperture Radar (SAR) data emphasize as particularly suitable for large-scaled monitoring. But the classification of SAR images is more difficult as of multi-spectral images. Because of the microwave’s interaction with the object parameters on the earth surface, like roughness or the complex dielectric…

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• ## Difference Between Skittles And Chromatography

Methods We began this experiment by laying out the needed materials to find the chromatography of Skittles Sweets and Sours and Crayola markers. Using a ruler and a pencil, a line was drawn on all thirty chromatography strips 1.5 centimeters from the bottom of the paper. This was to ensure that the starting point for each chromatography process was consistent. The chromatography of the skittles was found first. We began by pouring water into a cup. A pipette was used to transfer fifteen…

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