Summary Statistics questions with correct answers100% 2024

Statistic - Correct Answer Summary of a sample Parameter - Correct Answer Summary of a population Measures of Central Tendency - Correct Answer Mean, Medium, Mode Measures of Spread - Correct Answer Range, IQR, Variance and Standard Deviation Sample Variance - Correct Answer Always -1 from the data set total Skew - Correct Answer The symmetry of data, Left = + Right = - Kurtosis - Correct Answer The peals within a graph where the data may be more collected Low Number = Greater distribution High number = Smaller distribution Data Cleaning - Correct Answer Process of removing data which is not needed or does not fit with the data set. 5 reasons for data cleaning - Correct Answer Missing data - Unable to find Outliers - Extreme values Impossible values - Incorrectly collected data which doesn't make sense Incorrect formats - Does not type correctly into the data set Variable types wrong - Human error Data Cleaning Solutions - Correct Answer Delete rows - Incomplete sets missing certain data values Remove variables - If data is hard to find for that statistic Work around it Imputation - Use averages to be able to fill in the blanks Categorical data - summary alternatives - Correct Answer Summary table - A variable and then an amount ( Pink = 70%) Contingency table - Compares two variables Numerical Variables Ordered Array - Listing the numbers in order to be able to see the outliers, impossible values and median. Distributions - Creating a range of frequency (>20 but <30). This can be applied as % when dividing the frequency by the total. This generates a %. Can also calculate the cumulative frequency and %.