MAT 150- Midterm Chapter 3 Questions and answers + rationales (GUARANTEED SUCCESS).
histogram for numerical data - (ANSWER)used to display univariate, NUMERICAL DATA for larger data
sets (looks like a bar graph, but no spaces) almost always results from counting. Observation is often a
whole number
histogram for continuous data - (ANSWER)used to display continuous data- values are no longer just
whole numbers (class intervals)
small data set- 5 to 10 intervals
large data sets- square root n
round up
- 15 to 20 ----> 15 to <20
unimodal - (ANSWER)one peak
bimodal - (ANSWER)two peaks
multimodal - (ANSWER)multiple peaks
normal - (ANSWER)no such thing as evenly distributed
right skewed - (ANSWER)tail on the right hand side- positive
left skewed - (ANSWER)tail on the left hand - negative
left - (ANSWER)right or left- a distribution that is negatively skewed is to skewed to the _________
false - (ANSWER)true or false- a left skewed distribution has most of its data values on the left with one
or more potential outlines on the right
histogram for numerical data - (ANSWER)used to display univariate, NUMERICAL DATA for larger data
sets (looks like a bar graph, but no spaces) almost always results from counting. Observation is often a
whole number
histogram for continuous data - (ANSWER)used to display continuous data- values are no longer just
whole numbers (class intervals)
small data set- 5 to 10 intervals
large data sets- square root n
round up
- 15 to 20 ----> 15 to <20
unimodal - (ANSWER)one peak
bimodal - (ANSWER)two peaks
multimodal - (ANSWER)multiple peaks
normal - (ANSWER)no such thing as evenly distributed
right skewed - (ANSWER)tail on the right hand side- positive
left skewed - (ANSWER)tail on the left hand - negative
left - (ANSWER)right or left- a distribution that is negatively skewed is to skewed to the _________
false - (ANSWER)true or false- a left skewed distribution has most of its data values on the left with one
or more potential outlines on the right
