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Q: What is a frequency distribution of qualitative data and why is it useful?

A: Frequency distribution: Sometimes an event will be occurred two or more times, the number of…

Q: Why does the interquartile range Not Sensitive to Extreme Scores?

A: Quartiles: Three Quartiles, The first quartile separates the lowest 25% of the observations from…

Q: what is the area of this parelogram?

A:

Q: In any symmetrical distribution, what percentile would be associated with the mean value? What…

A: For a symmetric distribution, often the mean, median, and mode all occur at the same point.…

Q: In a normal distribution, what does the variance measure?

A: The normal distribution is a symmetric distribution that has a bell-shaped curve.

Q: What is the standard deviation on the graph ?

A:

Q: What is the drawback of summarizing the data using the median

A: Median: Median is the middle value of the set of numbers. The set of numbers should be arranged in…

Q: Is there a correlation between the number of hours spent studying and exam scores?

A: Correlation:  If two variables are said to be correlated if the changes in the value of one…

Q: What is Variability between Groups?

A: Introduction: Consider k groups are to be compared with respect to their means, when it is known…

Q: Draw an OGIVE curve corresponding to the data and use it to estimate the median

A: for the observed frequency distribution,  we need to draw an Ogive curve and find the median.…

Q: Explain how can we find the corresponding z-score of an area and a percentile.

A:

Q: What are the major classifications of averages?

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Q: The median of a sample is the most frequently occurring value in the sample. A) True False

A: The median is the value that separates the higher half of the data from the lower half of the data.

Q: What is Percentile Rank of an Observation?

A: Percentiles: If the elements in the data set are arranged in ascending order of magnitude, then the…

Q: What is Frequency Distribution for Grouped Data?

A:

Q: state two diaadvantage of displaying data in groups

A: We have to write two disadvantages ofndisplayimg data im group

Q: Explain the Representative Sample from a Population in Which the Variables Are Related?

A: The population is the area of interest for which, one want to inquire the characteristics or trend.…

Q: Give 2 examples of Mean in Measure of central tendency to ungrouped data

A: Introduction: It is required to provide two examples of calculating the mean of ungrouped data.

Q: Explain the difference between an independent and dependent sample. Give an example of each.

A: Dependent samples:The two samples are said to be dependent if there exist an effect of one on…

Q: If a set of exam scores forms a symmetrical distribution, what can you conclude about the students’…

A: The set of exam scores forms a symmetrical distribution.

Q: What is meant by composite average?

A: Composite average also known as combined average. It is the average of two or more groups/samples.

Q: What is Statistical Measure of the Amount of Variation in a Population?

A: Standard deviation: The standard deviation indicates by how much each observation differs from a…

Q: What percentage of scores falls in the tails of a normal curve?

A: Empirical rule: According to empirical rule, 99.7% of data lies within three standard deviations of…

Q: Twelve professional gamers were asked their age (in years) when they first began playing their game…

A: Formula for sample mean is as follows,   x¯ = Sum of all observations Total number of observations

Q: What is the relationship between a frequency or relativefrequency distribution of a quantitative…

A: Justification:Qualitative and quantitative data:Qualitative data are non-numerical measures such as…

Q: A psychologist has designed an index to measure the social perspectives of elementary school…

A:

Q: What is Descriptive Statistics?

A: Descriptive statistics: Descriptive statistics is nothing but the way to describe data. When we have…

Q: What is the effect of outliers on the value of correlation?

A: An outlier is a score that falls beyond the limits of the scores remaining on the scatter map. For…

Q: What are the median, 1st quartile, and 3rd quartile of this data set? The number of pairs of jeans…

A: What are the median, 1st quartile, and 3rd quartile of this data set? The number of pairs of jeans…

Q: Explain about the Two Independent Samples.

A: Two samples are said to be independent if the sample values selected from one population are not…