Which data description techniques are NOT appropriate for visualizing attribute 'Hair colour' that has values 'Black/Grey/Red/Brown/Blonde/White'? Select all that apply. (Note: There are multiple correct answers.) Bar chart Pie chart Normalized frequency table Five-number summary Histogram Frequency table Step chart If a Cohen's kappa value is 0.86, it means the strength of the agreement is: Poor Fair Moderate Good Which one of the following is not a step in K-Means algorithm? Find the correlation coefficient between the centroid and the data points. Update the centroids based on the means of the data point within the cluster For each data point find the closest centroid. Initially determine the number of centroids