Discuss the below:
1. Find the mean of the distribution shown.
x 1 2
P(x) 0.31 0.69
A) 0.96
B) 1.42
C) 1.18
D) 1.69
2. For a normal distribution with mean 5 and standard deviation 6, the value 11 has a z value of
A) -1
B) 1
C) 2
D) 3
3. If the standard deviation of a probability distribution is 6.25, the variance is 2.30
4. A stem and leaf plot is useful for keeping more precision than a grouped frequency distribution.
5. What kind of relationship does the scatter plot show between x and y?
A) A positive linear relationship C) No linear relationship
B) A negative linear relationship D) This is not a scatter plot
6. A researcher conducted a study to record the colors of students' eyes. The appropriate measure(s) of central tendency is (are):
A) The mode
B) The median
C) The mean
D) Both the mode and the median