Stats 1.3
Measures of Center
Statistics utility- your graphing calculator with statistical capability or a software
package
Measures of center/central tendency- a statistic describing a typical value
Stats 1.7
Variance and Standard Deviation
*variance- measure of spread; average of the squared deviation
*standard deviation-measure of spread; the square root of the variance. This is a rough
measure
Stats 1.5 Histograms
Histogram-Special type of bar graph that displays frequency no space between the bars
Frequency histogram-uses the number of values that fall in each interval
Relative frequency h
Stats 1.4
Quartiles, Percentiles and Boxplots
Rank-ordered-sequenced in order on some scale
Ascending order- rank-ordered from lowest to highest
Spread- range
Quartile- divides an ordered set into 4 s
Statistical Displays
Statistics is the branch of mathematics focused on the collection, analysis and
interpretation of data. From politics to sports to research labs, statistics are used in
virtually
Stats 1.2
Stemplots and Dotplots
Stemplot- -a way to organize data numerically
Distribution-a data set
Stem-the first digit(s)
Leaf- 1 digit always!
Maximum- highest value
Minimum- lowest value
Range-
Stats
10) Which way is this histogram skewed?
11) If this pie graph represents 300,000 peoples favorite snack foods, how many people have popcorn
as their favorite snack food?
12) Using the following
Algebra 2 STEM 2nd Semester Midterm Review WS
Topics:
Ch 13/14
*Convert from degrees to radians
*Convert from radians to degrees
*Find values from the unit circle
*6 trigonometric ratios
*Graphing a s
Ch 13/14
1. Determine the values of the six trig ratios.
A
sin A = _
cos A = _ tan A = _
csc A = _ sec A = _ cot A = _
2. Determine the values of the six trig ratios.
sin A = _
7
cos A = _ tan A = _
2
Ch 10
14) Find the center and radius of a circle that has a diameter with endpoints at (5, 4) and (0, -6).
15) Write the equation of the circle with center (-2,5 ) and radius 4.
16) Write the equation