Based on the histogram, which of the following sets of values was most common in the sample?

What is the best measurement of center and spread for the following data set represented by a histogram?

Louie collects data on the amount of sleep students in his class get.

Below is a graphical representation of the data

Which of the following is/are false about Louie's class' data?

i: the student with 2 hours of sleep is an outlier

ii: without the student with 2 hours of sleep the data is roughly normally distributed

iii: without the student with 2 hours of sleep the data is slightly right skewed

iv: the student with 2 hours of sleep is within 2 standard deviations of the mean

Louie collected the following data on sleeping habits of his classmates:

Calculate the median, 1st and 3rd quartile (Q1 and Q3) and mode for the data. There are 19 students in the class.