RHR/bpm |
---|
68 |
88 |
63 |
68 |
86 |
72 |
77 |
94 |
94 |
83 |
71 |
69 |
82 |
79 |
65 |
The human heart has a mean resting heart rate (RHR)of 72 beats per minute (bpm). The table gives the heart rates for students in ESS 101j Joggling class.
Confidence interval statistics | |||
---|---|---|---|
Statistic or Parameter | Symbol | Equations | OpenOffice |
Degrees of freedom | df | n − 1 | =COUNT(data)-1 |
Find a tcritical value from a confidence level c | tc | =TINV(1-c;df) | |
Standard error of the sample mean | SE | =STDEV(data)/SQRT(sample size n) | |
Calculate a margin of error for the mean E for n ≥ 5 using sx. | E | =tc*sx/SQRT(n) | |
Calculate a confidence interval for a population mean μ from a sample mean x and an error tolerance E | x − E ≤ μ ≤ x + E |