3. Patients who undergo chronic haemodialysis often experience severe anxiety. Videotape of progressive relaxation exercises were shown to one group of patients and neutral videotapes to another group. Then both groups took the State-Trait Anxiety Inventory; a psychiatric kuestionnaire used to measure anxiety. Data set 1 gives the score results for the patients that viewed the relaxation exercises videotapes. DATA SET 1 Score results of patients that viewed relaxation exercises videotapes 19 24 36 46 63 47 38 46 27 43 36 32 35 31 33 37 39 34 37 40 41 21 24 29 39 40 12 17 22 25 28 Use a class width of 6 and the first interval 12-17 to a. construct a frequency distribution b. Find the corresponding relative frequency distribution c. Find the corresponding cumulative frequency distribution d. Find the class midpoints e. construct a relative frequency histogram based on your result from part (b)

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.