Question

True False 3.33333 points QUESTION 9 In a numerical batch of data the standard deviation can never be larger then the range? True False 3.33333 points QUESTION 10 A distribution of data that is positively skewed is left skewed? True False :33333 points QUESTION 11 In a numerical batch of data the value of "Q3" can never be smaller than the value of "Q1"? True False 3.33333 points QUESTION 12 A batch of numerical data can only have one mode? irue False 3.33333 points QUESTION 13 The difference between Q3 (quartile 3) and Q1 (quartile 1) is referred to as the IQR (interquartile range) and is a measure of the middle 50 % of our data. True False 3.33333 points QUESTION 14 An "outlier" is a data point (value) that is inconsistent with the rest of our data, and is often defined as a value that is more than 1.5 times the IQR (1.5 x IQR) larger than Q3 or smaller than Q1. True False 3.33333 points QUESTION 15 If the mean is less than (smaller) the median, the data are positively skewed to the right? True False 3.33333 points QUESTION 16

Answer 1

Ans:

1)According to range rule of thumb,Range is four times the standard deviation.

standard deviation=range/4

True

2)Positively skewed means right skewed.

false

3)third quartile is always greater than first quartile

True

4)Numerical data set can have one or two or multiple modes(unimodal data or bimodal data)

False

5)IQR=Q₃-Q₁ and represents the middle 50% of the data.

True

6)True

lower fence=Q1-1.5*IQR

upper fence=Q3+1.5*IQR

if any point is outside these limits,then it is an outlier.

7)False,for positively skewed data,mean is greater than the median.

8)data collected from all of the population is associated with parameter.

Option C is correct.

9)Number of suitcases in a plane is discrete data

10)Hair color is categorical/nominal data.

11)Nominal