Sa že takKo re la ci ja je sta tis tič ki pos tu pak za iz ra ču na va nje po ve za nos ti dvi ju va ri jabli. Vri jed no st ko re la ci je broj ča no se is ka zu je koe fi ci jen tom ko re la ci je, naj češ će Pear so no vim ili Spear ma no vim, dok se zna čaj no st koe fi ci jen ta is ka zu je vri jednoš ću P. Koe fi ci je nt ko re la ci je po ka zu je u ko joj su mje ri prom je ne vri jed nos ti jed ne va ri jab le po ve za ne s promje na ma vri jed nos ti dru ge va ri jab le. Pred znak koe fi ci jen ta ko re la ci je (+ ili -) go vo ri nam o smje ru po ve za nos ti. Pri li kom iz raču na va nja ko re la ci je naj češ će se pog r ješ ke od no se na uv je te za iz ra ču na va nje ko re la ci je, tu ma če nje koe fi ci jen ta i zna čaj no st ko re la ci je, vi so ke koe fi ci jen te ko re la ci je, pret pos tav lja nje uz roč no-pos lje dič ne ve ze, ja či nu po ve za nos ti (koe fi ci je nt de ter mi na ci je), te us po red bu dva koe fi ci jen ta ko re la ci je. Ključ ne ri je či: ko re la ci ja, Pear so nov koe fi ci je nt ko re la ci je, Spear ma nov koe fici jent ko re la ci je, koe fi ci je nt de ter mi na ci je, pog r ješ ka, sta tis ti ka Ab stra ctCor re la tion is a sta tis ti cal pro ce du re ap plied to cal cu la te as so cia tion be tween two va riab les. The va lue of cor re la tion is nu me ri cal ly shown by a coeffi cie nt of cor re la tion, mo st of ten by Pear so n's or Spear ma n's coeffi cie nt, whi le the sig ni fi can ce of the coeffi cie nt is expres sed by P value. The coeffi cie nt of cor rela tion shows the exte nt to whi ch chan ges in the va lue of one va riab le are corre la ted to chan ges in the va lue of the ot her. A si gn pre ce di ng the coeffi cie nt of cor re la tion (+ or -) in di ca tes the di rec tion of cor re la tion. The mo st freque nt er ro rs in cal cu la ti ng cor re la tion are re la ted to con di tio ns for cal cu la tion, in terpre ta tion of the coeffi cie nt and cor re la tion sig ni fi can ce, hi gh cor re la tion coeffi cien ts, as sum ption of cau sal re la tion ship, the stren gth of cor re la tion (coefficie nt of de ter mi na tion), and com pa ri son of two cor re la tion coeffi cien ts. Key wor ds: cor re la tion, Pear so n's cor re la tion coeffi cie nt, Spear ma n's cor re lation coeffi cie nt, coeffi cie nt of de ter mi na tion, er ror, sta tis ti cs Što tre ba zna ti ka da iz ra ču na va mo koe fi ci je nt ko re la ci je? What we need to know when cal cu la ti ng the coeffi cie nt of cor re la tion?Mar ti na Udovičić 1 , Kse ni ja Baždarić 1 , Li di ja Bi li ć-Zul le 1,2 , Mla den Pet ro več ki 1,3 1 Katedra za me di cin sku in for ma ti ku, Me di cin ski fa kul tet Sveu či liš ta u Ri je ci, Ri je ka

Micro, small and medium-sized enterprises (SMEs) are considered to be the engine of the European economy. In EU SMEs make up more than 99% of all companies and provide around 75 million jobs. They are a key source of job creation and stimulation of entrepreneurial spirit and innovation and are therefore essential for fostering competitiveness and maintaining employment in the EU. Yet SMEs often have problems in raising funds to finance fixed investments and inventory and working capital. SMEs mostly use internal sources while the most important external sources of SMEs are bank loans, which are not easily accessible. Hence, one of the priorities of the European Commission is stimulating SMEs through EU funds and programs in order to enable SMEs development and finally to contribute to economic growth. SMEs sector also dominates the economic structure of Croatian economy and they have similar financing problems. However, Croatia in period 2014 -2020 have at disposal a total amount of 10.676 billion of euros from European structural and investment funds, of which 8.397 billion are aimed for cohesion policy objectives and 470 million euros are aimed for the development and competitiveness of SMEs. Besides, EU programs COSME and HORIZON 2020 are intended to provide direct support to SMEs and to create a favorable environment for their development. However, even though the number of successful project applications for small and medium-sized enterprises in the total share of Croatian project applications is relatively high, fund absorption has not reached satisfactory levels. Using the sample of Split-Dalmatia County's SMEs, this study finds out reasons for low absorption capacity from SMEs point of view: SMEs are interested in funds from European Union, but are not sufficiently familiar with their availability i.e. funds at their disposal, especially programs COSME and HORIZON 2020; SMEs state that they know how to apply for EU funds but considered the procedure as complicated and demanding regarding documentation, and that the needed knowledge and know-how for proposal is beyond their scope; SMEs are not satisfied with the cooperation with state institutions, especially Ministry of Regional Development and EU funds and Croatian Chamber of Economy. We point out four main conclusions: (1) SMEs are not enough aware of EU financing possibilities; (2) additional promotion of EU programs directly to SMEs is required; (3) additional education of SMEs regarding project proposal and documentation is needed and (4) more proactive policy of state institutions and cooperation with local authorities is expected. Finally, greater awareness and professional help might be a key in strengthening the SMEs, whose entrepreneurial spirit and innovation process is a prerequisite for economic growth and development.