Research Scenario B: Question 2: Discussion
Interpretation of findings
Table 1.2 Descriptive Summary Statistics for the independent variable age
age
Mean
57.62
Standard Error
2.299936
Median
58.5
Mode
58
Standard Deviation
16.263
Sample Variance
264.4853
Kurtosis
-0.65102
Skewness
-0.22511
Range
69
Minimum
22
Maximum
91
Sum
2881
Count
50
The variable age is the independent variable and is of a ratio level of measurement (Loiselle et al., 2011). The measure of central tendency to describe age in table 1.2 are the mean of 57.62 which is the average age, the median which is the middle score within the distribution when all scores are organized of 58.5 and the mode of 58 which is the most frequently occurring age (Loiselle et al., 2011).
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The kurtosis has a large negative value which is representative of a flatter curve also know as playkurtic (Salkind, 2013).
The average deviation of scores from the sample mean is 16.26. In order to calculate if there any extreme ages, any ages that occurs below -2SD and above +2SD would be considered extreme and occurs 5 out of 100 cases (Loiselle et al., 2011). Scores that are between -2SD and + 2SD occurs 95 out of 100 cases (Loiselle et al., 2011). At –2SD the value is 25.10 and at +2SD the score is 90.14, in table 1.2 the minimum age is 22 and the maximum age is 91, therefore, there is an extreme score which is an age of 22 which is below -2SD (Loiselle et al., 2011). Thus, the median would be the preferred measures of central tendency to describe the sample as the median is insensitive to extreme scores (Loiselle et al., 2011).
Table 1.3 Descriptive Summary Statistics for the dependent variable diastolic blood pressure
diastolic blood pressure
Mean
87.58
Standard Error
2.187924
Median
88
Mode
88
Standard Deviation
15.47096
Sample Variance
239.3506
Kurtosis
-0.18087
Skewness
0.052909
Range
62
Minimum
58
Maximum
120
Sum
4379
Count
50
The variable diastolic blood pressure measures of central tendency are the mean of 87.58, the median of 88 and the mode of 88 (Salkind, 2013). The measure of variability includes a range of 62 with a minimum of 58 and a maximum of 120 diastolic blood pressure,
2. Based on the scale of measurement for each variable listed below, which measure of central tendency is most appropriate for describing the data?
A normal blood pressure reading should be between 80-89 for the diastolic reading. A diastolic reading of the blood pressure being higher than 90 would be considered hypertension. A diastolic blood pressure reading below 80 is considered hypotension.
7. Based on the results of this exercise, which of the following blood pressure readings are significantly above normal, indicating hypertension?
· How were measures of central tendency used in the study? Did the study use the most appropriate measure of central tendency for the given data? Why or why not?
Please check your numbers again, some of them seem incorrect. For example, how is that possible the subset has a more extended age range than the total sample?
2. Based on the scale of measurement for each variable listed below, which measure of central tendency is most appropriate for describing the data?
Based on the given sample of student test scores of 50, 60, 74, 83, 83, 90, 90, 92, and 95 after rearranging them from least to greatest. As the mean is based on the average of sum, the average of this sample is 79.67 or 80. The mode refers to numbers that appear the most in a sequence and in this case 83 and 90 both appear twice. Range calculates the difference between the largest and smallest number, which are 95 and 50 which have a difference of 45. The variance is the difference between the sum of squares divided by the sample size, which is the number in the sample minus one (Hansen & Myers, 2012), meaning it takes each number of the set and subtracts
5. For the following set of scores, compute the range, the unbiased and the biased standard deviations, and the variance. Do the exercise by hand.
The results are as follows: the mean age of the sexual minority youth was 16.24 years old, female sexual minority youth were
As the blood is forced throughout our body, there is a pressure that is exerted on the walls of our arteries, this is known as blood pressure. We see blood pressure represented as two numbers, the systolic (top) and the diastolic (bottom) numbers. The systolic blood pressure is the heart contracting and the diastolic is the heart relaxing. A normal, healthy, blood pressure would be written as 120/80 mmHg (millimeters of mercury) or verbally expressed by most individuals as 120 over 80. Our blood pressure can vary depending on many things. When the diastolic or systolic pressure is high, or significantly and consistently above 120/80 mmHg, this is what we call hypertension. There are different stages or degrees of hypertension. Lippincott Williams and Wilkins (2010) describes the stages as the following:
Mean (X) is a measure of central tendency and is the sum of the raw scores divided by the number
Even though the population surveyed is less than one hundred I believe the data presented gives great insight on the questioned asked. In statistical literacy, probability as well as mean, median, mode and more are discussed. With probability we learn how to make predictions that are pretty spot on. "Probability is defined as the likelihood that a particular outcome or event will occur," as shown in A Particular Introduction to Statistics. So now lets take a look at the data using some statistical analysis concepts. First, lets determine the probability of receiving a correct answer or receiving a wrong answer. The possible outcomes is either a correct answer or a wrong answer. Therefore, the probability equals 1 (CA) over the total of possible outcomes which is 2 (CA and WA) and 1 (WA) over 2 ( CA and WA). Both answers give us 1/2 and since they are the only possibilities they equal 1. In identifying the middle or average of the set of data is known as central tendency. These measures include, mean, median, and mode. Central Tendencies can be used in this research to see what the average number of correct responses between the groups. First we put the data set in order form smallest to greatest. Than we divided by the total number of data sets. Which gives a mean value of 7. This shows that the average number of correct responses among age groups is
pressure varies person to person depending on a variety of personal factors. Blood pressure is an
The data analysis focused mainly on the number of hours each participant in the study spent a week on Pinterest. From that data we were able to calculate the mean, median, mode, range, and standard deviation for both males and females, as shown in Table 1 in Appendix B below. The mean shows the average amount of hours for each gender that was spent on