Baby statistics
A researcher that surveys 10 students in each grade is conducting this type of sample.
What is a stratified sample?
What is y?
The common difference in the arithmetic sequence: 9, 19, 29, ...
What is 10?
In a histogram, the square root of the number of data items is used to figure out how many of these you should draw.
What are bars?
The minimum and maximum are determined by the 'a' value which represents this.
What is amplitude?
If the average speed of a gazelle is 60mph and a particular gazelle's speed is 70 mph, then its z-score would be (positive, zero, or negative).
What is positive?
sec(x) is the reciprocal of this function.
What is cosine?
It's the 20th term in the arithmetic sequence
2, 7 ,12, 17, 22, ...
What is 97?
What is positively skewed?
The formula for period is this.
What is 2pi/b?
In a box and whisker plot, this percentage of the data is above the lower median.
What is 75%?
tan(x) is equal to this over this.
What is sin(x)/cos(x)?
What is 157464?
The z-score formula requires you to know the data value, the mean, and this.
What is the standard deviation?
A function of the form y = a sin(bx) will always pass through this "original" point .
What is (0,0)?
In a normal distribution, this percentage of the data is within 2 standard deviations of the mean.
What is 95%?
The value of tan(270).
What is undefined?
The sum of the arithmetic sequence
7 + 11 + 15 + ... + 67
What is 592?
If you're looking for the percentage of people whose weights have a z-score greater than 1.5, what are the upper and lower bounds?
What is 1.5 for the lower and 9999 (or some large number) for the upper?
Tangent graphs always have these features, often represented by dotted vertical lines.
What are asymptotes?
What is parameter?
The series 1 + 5 + 25 + 125 + ... is to said to do this, meaning it does not approach a value.
What is diverge?
It's the percentage of data in a normal distribution that is OUTSIDE of 3 standard deviations from the mean.
What is 0.3%?
It's the period of y = 2 cos (x/4).
What is 8pi?