PSYCH 101 Lecture Notes - Lecture 4: Resting Potential, Central Tendency, Neuroglia
Document Summary
Descriptive statistics: summarize and describe the characteristics of a set of scores. Construct frequency distribution: shows how many participants received each score tells us at a glance about certain characteristics of the data. Convert data into a histogram: graph of frequency distribution. Measures of central tendency: describe a distribution in terms of a single statistics that is in some way typical of the sample as a whole. Mode: most frequently occurring score in a distribution. Mean: most commonly used measure of central tendency; represents the arithmetic average of a set of scores. Median: the point that divides the distribution in half when the individual scores are arranged in order from lowest to highest unaffected by extreme scores. Measures of variability: provide information about the spread of scores in a distribution. Range: the difference between the highest and lowest score in a distribution. Deviation score: measures the distance between each score and the mean.
